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      Injector dead time calculator. 0ms with a battery voltage of 13.



      • Injector dead time calculator 02 0. 0 Bar (43. 120 ms/V. This is leading me to believe that dead time and required fuel are Feb 15, 2016 · ^ no no no. 6 V 18. You then need to add on the dead time at that battery voltage. This is useful when using a rising rate fuel pressure regulator. 0V 12. My tune is set to 0. 1 firmware. The flow rate for different pressures can be calculated here: Injector Calculator. Aug 9, 2010 · I need JDM 440cc high impedence injectors Dead times and resistance. These all have the same definition. If the two are about the same, dead time setting is good. Simplify your tuning process with accurate injector data for a clean startup and idle. Here is a picture of the stock curve values set by tunerstudio. Nov 14, 2013 · The Req. This should then maintain the same AFR if the injectors are supplied with a voltage that varies. The average was 0,763 ms for all injectors. 72 0. The amount of latency an injector requires is dependent on several factors such as the size of fuel injectors, viscosity of fuel, manifold pressure, and fuel pressure. 04cc) is the injector dead time, also called injector latency. If you have a guesstimate of the injector parameters the spreadsheet will calculate the number of squirts required to fill the measuring cylinder 90% full for each pulse width - saves on overshooting the maximum measurable volume and having to run tests multiple times while still ensuring a fill ratio that provides good accuracy. All FuelTech engine management systems are capable of driving stock injectors to massive 850 lb/hr injectors. As for a formula calculating the new injectors size- it is old size times Square root of new fuel Pressure divided by old fuel Pressure . 02:28: While the injector dead time varies with battery voltage, it will also depend on the amount of fuel pressure too. 00 ms. The data is collected in-house using our custom digital precision flow benches and in accordance with SAE J1832 guidelines. Follows the quickstart guide. 4 HP and 400Nm at the hubs in Dynapack. MS3 users should use the dead time and the voltage offset %. 4V 19. 4. 1ms. Also for extra credit, you can take the effective (inj. When using a 3D dead time correction table, dead time can also be corrected for changes in fuel pressure. Injector Dead time is the natural Mechanical time it takes for the fuel injector to respond after a pluse from the ecu. 30 0. 0721), if all other engine management systems remain unchanged. 0 1. Jul 1, 2010 · The knock signal correlates exactly with the changes in voltage/current. On the injector dead time sheet it lists the injector offset values. Flow: Rating @ Flow @ 43. 8V 9. 2V the standard 0. Learn how to convert injector dead time settings for your MS3Pro, covering firmware versions 1. 85 milliseconds. 5 bar again and the voltage was varied between 8V and 15V - this should also account for dead times during cranking. GM offset is the offset time to the linear flow rate intercept point. Duty cycle is RPM dependant since the faster an engine spins, the less time an injector will have available to open before the next ignition FuelTech offers a Fuel Injector Calculator to assist racers and builders select the proper fuel injector sizing. regardless of engine rpm and {if you're under 100% idc} there is still a valve closing and injector dead time. Join in Our Mailing List Mar 4, 2016 · Calculate the difference in fuel delivered, use this to find the injector dead time (or use my excel sheet). May 17, 2017 · Injector Offset Matching – Used to display how closely matched each injector is in latency (delay), guaranteeing that each set of injectors takes a similar amount of time to fully actuate. If I slowly increase PW it the injector will start to dribble at about 1. calculate dead weight - the weight of fuel that is missing, this is proportional to dead time. 6 V 10. 75 ms. Both the dead time and the correction have to be accurate to get a good result. Does the crank timing, does that idle time, does an idle VEAL (so they don't cry and pass out blissfully) then spends time dialing in injectors at idle with above info and two new Tuner Studio functions. 4 V 15. 25ms dead time_ (5ms - 1. Fuel injector dead time, fuel injector load time, fuel injector lag time, fuel injector offset and fuel injector dwell time. Injector Dead Time is used to compensate for the fact the injectors will open slower with lower battery voltages, such as during cranking, or, on some engines, different electrical loads when the alternator voltage drops. Injector Off Times to use with Terminator X and Terminator X Max ECUs 8. Scott Checked out the help files but nothing with common injectors such as RCs or IDs Mar 10, 2024 · Re: Injector Dead-Time with 1. Pressure tab and everything seems ok so far. 8 to put me closer to the 2ms region then retune the ve table to give me an appropriate • Injector Flow Rate • Injector Dead Time. 0 V 12. You can adjust the injector time and pulse number if you have super high flow injectors etc. Let’s first consider static flow matching which was the industry standard prior to Injector Dynamics. James Sep 30, 2019 · The dead time values are what they are if your fueling is off then you have to tune the VE table. HP Duty Cycle: Part Number Duty Cycle (also: Injector Duty Cycle or IDC): The time that a fuel injector spends open compared to the total time available (two rotations of a four stroke engine), typically expressed in a percentage. In this article, we'll introduce you to this calculator and guide you on how to use it effectively. No other manual steps required. 63 1. 775 ms. 85 0. On engine set up it asked for primary injector dead time . 7ms. Injectordrivers is MS3X. It's in this format so that the graph x-axis appears correct in Excel. 0 V 16. Individual Injector Offset Values for each serial numbered injector in your set. 37 0. by jsmcortina » Tue Jan 28, 2020 11:27 pm. How to calculate an injector duty cycle? Apr 28, 2014 · Actually I tested this injectors last weekend. Jul 6, 2011 · Then examine the datalogs. 561-427-0082 Nov 15, 2013 · The algorithm assumes a linear correlation in injector offset "dead" time as a function of the battery voltage, and allows you to dial in a programmed offset in microseconds per volt relative to 13. Sep 26, 2016 · While the injector drives in the ECU probably do have some minor impact on the injector dead time, you're starting to get down to the last 0. 850cc GM Data 1000cc GM Data 1500cc GM Data Venom 160lb GM Data Venom 210lb GM Data Below are some base tunes for SEP Injectors made by trusted Tuners such as Matt from Sloppy Mechanics, Nick Noble, Cesar Enriquez, and "Starvin'" Marvin HPT_-_E38_-_G48_SEP_160lb_injectors_SD_Flex_enabled. 2mS/V would extend the pulsewidth by 0. 44 0. The datapoints should form a line. Apr 3, 2022 · If you have a guesstimate of the injector parameters the spreadsheet will calculate the number of squirts required to fill the measuring cylinder 90% full for each pulse width - saves on overshooting the maximum measurable volume and having to run tests multiple times while still ensuring a fill ratio that provides good accuracy. Nov 3, 2011 · Well, i see many many threads on people asking for injector dead times for variouse injectors all the time, well being from an erra of when i learned Stand alone programming "dead times" weren't even there (or called dead times anyway) The "dead time" is just the amount of time from closed to opened that a certain sized injector takes to open Mar 11, 2013 · Right now I have set dead time to 1. 4 V 11. While testing the stock 2ZZ injectors, I tried to confirm the injector dead time by turning the pulse width way down and crank it up slowly. 6V 18. Another way of looking at this is to say that AD is what the MS is commanding the injector and BE is the fueling you get out of it so the rest of the commanded time is 'wasted' or 'dead'. Thanks. 5psi 3 Bar Apr 8, 2015 · All fuel injectors require a certain amount of time to fully open which is referred to as Injector Latency. An example would be that it the underlying fuel calcs may calculate a value of 2. 35 0. This was one to my car that is running Speeduino. Theoretically the same process should a Jun 8, 2024 · I recently swapped my KPro for a Haltech Elite 1500, and the car is up and running but the idle quality isn't super great. INJ - 139 Base Fuel Pressure in psi / bar 29psi 2 Bar 43. x. The raw data (in red) is entered into the colums on the left. This would be (20 / 200 = 1/10 ) 20 (ms injector is directed to pulse) / 200 (time it took for the engine to complete a cycle) would give you = 1/10 OR a 10% Duty cycle. 5 PSI is run at 50 PSI. Changing this value will destroy my dyno tune. I am thinking it should be . zip. The ID1050x is the evolution of the ID1000, and the latest addition to the X-Series. Fill in the blue fields, and the spreadsheet will calculate flow rate and dead time for you. 8 engine. . 6V 14. Injector battery offset is usually a table that indicates how much delay there is in opening/closing injectors depending upon the battery voltage. If the injector supply voltage was to drop to 12. I'm 99% certain that they are both incorrect. Not a single value . The input for the MS3+MS3X ECU for the dead time is in percent instead of usec. The graph below shows the dynamic response of two hypothetical 1500 cc/min injectors within their linear operating range. The dead time setting can be found under Fuel Settings>Injector Dead-Time/PWM. If you think about it, you can fool the dead time a little bit, one to two tenths off of best dead time is about it. The dead time comes from the difference between Jun 3, 2016 · the dead time is the physical time it takes the injector to actually open. 5% of what most tuners are ever really going to be looking at, measuring, or even worrying about. As the battery voltage drops, we have less voltage available to drive the injector, so the dead time increases. 0ms with a battery voltage of 13. Simple Oct 2, 2004 · 3. e. So I imputed the volts that the car charges on 13. Generally lower voltage will have increased "dead times" for the injectors. We also offer many different types of o-rings, pigtails and plug & play adapters required when upgrading your system. So what you do, set the VE to 80 for cells around idle 0 to 50kPA and 0 to 900 rpm. EV1 type. 8 you must enter the Correct Injector Dead time or Injector Latency. 8mS dead time you basically removed 0. 81 1. 6000 RPM / 2 ( Otto cycle engine) = 3000 cycles per minute. Is this method the correct way? MS2 users should use just the dead time and voltage correction. 0 V New** Holley EFI Injectors MPFI 19 lb/hr (PN 522-198) 19. The car is running, and running pretty well. So could I in theory increased the dead time afrom say 0. 64 0. 2mS from your PW across the entire table because the ECU was previously adding actual injection time in what you told it was dead time. 65 + 1. Really no need to measure the entire HPLC, just certain parts of the • Injector Flow Rate • Injector Dead Time. 78ms. If idle LTFT is more positive than cruise LTFT, increase the dead time, if less, decrease. The popular, existing fuel equation has been retained allowing Okay so I was able to input a injector offset values on the map for 11volt 12 volts 13 volts and 14 volts. All values here are meant for the standard fuel pressure of 3. I don't know if this is reasonable, but it probably is as the 60# units of the same type are known to have a dead time of ~. calculate dead weight ratio - This is the percentage of fuel missing because of dead time. Battery correction: 0. The pressure was varied between 1. 2V and 43. 24 1. 46 0. 0 A 240 CC injector tested at 43. The test is done on a battery (Exxide Maxxima 1000) with only 11. no dead time) to calculate the dead time. 6V 10. Oct 30, 2014 · Injectors require a certain minimum pulse time to begin to open, and to obtain minimum fuel flow. Nov 24, 2012 · If you have a guesstimate of the injector parameters the spreadsheet will calculate the number of squirts required to fill the measuring cylinder 90% full for each pulse width - saves on overshooting the maximum measurable volume and having to run tests multiple times while still ensuring a fill ratio that provides good accuracy. 98 10 Volt 0. Oct 1, 2021 · good topic! this weekend I measured the dead time for my injectors: Bosch 280 150 210. I suspect its running rather rich and so you are having to feed it ~10% throttle to stay at idle. As your injector’s flow rate increases, the time at which the injector opens becomes increasingly small in order to produce the same air-to-fuel ratio. 5 PSI / 3 Bars. x and older, 1. high impedance. 8V 17. Mar 31, 2019 · The easiest way to do it that actually works is to run the injector on the car out of the manifold and find the minimum pulsewidth that is actually flows fuel. Nov 12, 2012 · For those of you doing injector dead time calculations, you can use the following formula(e) entered into Excel to get a graph and a linear regression estimate of the dead time. Jan 21, 2014 · If the injector open time in test mode is greater than or equal to the test interval, the injector stays open continuously. 2 volts which means at idle my actual open time is around 1. Modified Let’s first consider static flow matching which was the industry standard prior to Injector Dynamics. x to 1. 0V 8. Megasquirt Deadtime Calculator 2. 2V: 0. 65 -1. 58 0. 614ms @ 13. 0V Jan 25, 2008 · ( stock injector size / rate of flow for new injectors on E85 ) - 1 = global fuel settings; So with that being said lets plug the new information in and figure it out for your RC 1000cc injectors 91 Octane ( 450 / 1000 ) - 1 = -55 % Ethanol 1. 6. 8 V 9. Shown here is a physical way to flow injectors, calculate the Injector DeaDtIme charts Part No. Industry-Leading Technical Support. Mar 31, 2019 · Injector Dead time using Manufacturer specs and calculator Post by Jamie V » Tue Jan 28, 2020 11:54 pm This is the curve that was produced using the calculator with my injector info from Ford. How do I translate the information that Injector Dynamics provide form usec to percent so I can setup the dead time information correctly in the MS3 for my injectors? Please Jan 4, 2010 · Ford and GM calculate the voltage offset / dead time differently. Attached Files. Apr 20, 2022 · If you have a guesstimate of the injector parameters the spreadsheet will calculate the number of squirts required to fill the measuring cylinder 90% full for each pulse width - saves on overshooting the maximum measurable volume and having to run tests multiple times while still ensuring a fill ratio that provides good accuracy. Apr 16, 2016 · I tend to explain dead time as the difference between the pulse width the ECU sends to the injector and the amount of time fuel is delivered by the injector - Essentially the difference between the theoretical flow and the actual flow. jpg; Attachments may only be downloaded by paid Gold members. Honestly I'm guessing 80% of MS users have deadtime set to the default 1ms, 15% have a SWAG based on injector data floating around the internet, and 5% have done injector testing on their exact rig and come up with some numbers which may or may not be real/work. Jul 19, 2005 · These areas really sensitive to dead-time and voltage compensations. But this assumes a linear relationship between fuel flow and pulse width which we know isn't accurate. Published Fuel Injector Data. (Dead weight ratio) = (Dead Weight) / (100% duty weight) iii. 2V. The technical storage or access is strictly necessary for the legitimate purpose of enabling the use of a specific service explicitly requested by the subscriber or user, or for the sole purpose of carrying out the transmission of a communication over an electronic communications network. The slope of both lines is the same, as they have the same flow rate, but the difference in offset results in the injector with the higher offset delivering 2. Bosch-0280150558. No voy a detenerme en explicar la importancia de configurar una ecu con los valores de lag de inyector correctos ya que doy por hecho que I attached the Mega Squirt Dead Time Calculator Excel Spread sheet and in this I put User Fuel Settings > Fuel Pressure to 50 psi which "Calculated" all my info. I've got RDX injectors fitted, and went with the dead time values that came from KManager (as close as I could at any rate, since NDS won't let me enter 6. Lower battery voltage requires increased injector latency (dead time). 1 = 1. Deadtime and non linear region on small pulsewidth is tested at 13,8 volts shown in Tunerstudio. How do you set you fuel injector dead time? Where do you find injector dead time? How to calculate injector dead time? Let's get to it!!Thanks For Watching Jun 14, 2016 · I'm still confused about proper dead time. 4 V 19. One with an offset (Dead time, latency, etc. Jun 17, 2014 · Going from 1. Plot MAP divider AFR on the X-axis, then injector on-time on the Y-axis. 0 release Post by jsmcortina » Sun Mar 10, 2024 10:16 pm grsmonkey wrote: ↑ Sun Mar 10, 2024 5:38 am I need a clarification on the new settings, since there isn't a field to enter the deadtime @ 100% (ms). 95 milliseconds, and one with an offset of 0. Jun 22, 2020 · Need some help as I am totally new to tuning,I am running Deatschwrks injectors and am unclear as what to enter in the field for injector dead time. x and newer, and updating from 1. There can be other factors like wiring, which can vary from car to car. Octane Booster Mixing Calculator. pdf After that I start to get lost. 1 ms (approximate at 13. 19 0. Injector size; Injector dead time; Injector characteristic (GM style) 3. Tested with fuelsystem from a BMW M50 enginge, that should be 3 bar. Dec 17, 2015 · Injector dead-time @13. Generally (but not always) the larger the injector flow rate, the more time the it takes for the injector to open and close fully (known colloquially as “dead time”). Repeat at whatever voltages the dead time table in your ecu needs. The time required for the injectors to begin to open is ref Now we need to determine the time the injector is energized at this point in the fuel map. 5 psi static fuel pressure. 45 12 Volt 0. Now that the ECU is reading the actual intake air temperature from the air temp sensor and the air pressure from the manifold pressure sensor, it can calculate the mass of air that should be entering the engine based on the engine capacity. Jul 18, 2011 · A la hora de usar centralitas programables, muchas veces nos vemos en el apuro de que no podemos conseguir datos del fabricante de los inyectores de nuestro coche. Also known as Battery Offset and Dead Time. And adjust dead time so it tracks. 500 (Ms). 4V 11. Dead time calculator and Injector Dead Time Detector. 5. The Injector Dynamics fuel flow calculator is not based on efficiency. Not surprising it would run rough (especially cold) if that is the cause. 421. 0mS to ~0. I just updated to the 1. 26 0. the dead time in tunerstudios is how much extra time is added to the PW to compensate for the dead time. ( 450 / 670 ) - 1 = -32 % INJECTOR DEAD TIME Nov 15, 2012 · there is a power difference on getting the timing right, and there is an importance on getting it back in line as well. 25ms) x 640cc/min x 1min/60000ms = 0. 40 0. En este tutorial voy a tratar de explicar como hayar el lag de apertura de los inyectores. Product Questions? 405-217-0701. Ford dead time is time until the injector starts to spray. This is how the VE table should look if the injector data is correct. 95 ms to 2. Really no need to measure the entire HPLC, just certain parts of the Mar 16, 2020 · Dead time has a similar effect. MS has an injector test mode so you can do testing your self. It takes into consideration both opening and closing time. If I had 1000 ml/min injectors with your 1. 6ms and I assumed this is the injector dead time (for the specific voltage and fuel pressure I am running my test on of cause). 52 BSFC - Est. I have included the information I have in the attachments. battery voltage, across 3 cells, straddling the battery voltage that I was seeing). 53 0. Jul 31, 2023 · IPW is the injector pulse width (ms) To calculate the injector duty cycle, multiply the RPM of the injector by the pulse width of the injector. By Appointment Only 415 E Hill Street Oklahoma City, OK 73105 United States of America The fuel injector duty cycle (IDC) is the percentage of time the injector is supplied with power. But with voltage there is almost no limit. 5 bar and 4. 4V 15. Any thoughts? Don't touch VE yet. 5x9)) = 499. I can't think that I've ever personally changed the dead time values based on the ECU I'm tuning. Because of that, the injector data you might find on the internet is almost always not fully correct. Nominal Flow Rate – 1728cc/min @ 3. 5 bars (50. 2 V 12. 1000 x 0. The time during which the injector is powered (or activated) is called the injector pulse width (IPW). 2 RC 1 firmware. Excel has the advantage of having a linear curve fit ("trendline, linear"). A lambda reading would confirm this. 5? . If I use 1ms deadtime, the graphs for each injector don't look great: To me, this implies that if the deadtime really was 1ms, then to achieve the mass of fuel seen, the injector flowrate would have to 2-3x the actual rated flowrate. 15 0. 5ms. 07 volts: %PDF-1. Dead Time Too Low When the dead time is set too low, we need to over-compensate in the light load areas by increasing the VE numbers to get more fuel. Technical Data For SEP Injectors GM ECU Stock style injector data in Xcel spreadsheet format. Apr 15, 2004 · My injector dead times are 0. from 6v 7 8 9 10 1 12 13v. Apr 1, 2012 · Now that table provides me the dead time of the injector for a specific voltage in usec . Dead time @13,2 V: 1,101 ms Dead time correction: 0,208 ms/V The values were measured at 43 PSI with E85 I don't know if they apply to your injector very well but they could be close. The result is a far more accurate estimation, which allows you to pick the right injector the first time. 0 BAR. 5psi 5 Bar 8 Volt* 1. 14, because I found it on another site, any ideas of how much I should add to the table to make up for the change? -MS3X, (V3 PCB) 1. Apr 22, 2020 · In my settings Injector Rated Fuel Pressure is set as 300kpa, and my fuel regulator is adjusted at 300kpa. If you project this line to the Y-axis, the intercept is the dead time. Nov 24, 2012 · This is my take on a dead time calculator. 5 psi), Using E10 Emissions Certification Fuel at 49 Degrees C (120F) Maximum Differential Fuel Pressure – 7. 1 second / 50 cycles = 20 ms total time available for each Dec 29, 2006 · In any case a better way to calculate fuel rate is to get something like milliseconds (of fuel) per second. Is that considered the proper dead time, or is it where the graph crosses the X axis (because the dead time is used in calculations for the linear part of the flow). With the abrupt changes in waveforms, this is telling me that pintle transients are in the 10s of microseconds which is much much less than the 5 milliseconds of the control pulse and somewhat less than the dead time. The Injector Dead Time Calculator is a valuable tool for mechanics and tuning enthusiasts, helping them calculate the corrected injector pulse width to ensure optimal fuel delivery. 81 16 Volt 0. Traditional Fuel Equation. 3000 cycles per minute / 60 seconds = 50 cycles per second. 2 volts) ms dead time I would expect my idle PW to be around (515/1000)x1. Step1: Get the correct settings into the ECU 2: Tune the Ve table best you can with the engine fully warmed up 3: work on the idle settings to get the car to idle at the speed you want. Slowly raise and lower it until the RPM starts to drop significantly or the car starts to misfire. 6 V 14. 6-1. 5-say 0. 64 Part No. Then I do a revision with 20 added to boundary, wait 20 minutes of idle time, do a wot stomp while logging the entire time - I made additional adjustments if needed to itt here. These injectors are standard issue for the BMW K75 and BMW K100 motorbikes. Aug 10, 2021 · Injector deadtime is dependent on the ECU being used and type of injector driver. Dead time calculator. What is an injector duty cycle? Definition: An injector duty cycle is a measure of the percentage of time that an injector is being supplied by with power. 8ms at 12. 0 Bar (101. Here's where my next little bit of confusion comes in; with a normal injection target of 5. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network. The only control the ECU has is opening the injector for a certain amount of time, hence the milliseconds. INJ - 153 Base Fuel Pressure in psi / bar 29psi 2 Bar 43. 02:34: This is because the fuel pressure is working against the internal valve in the injector, forcing it closed Entering the incorrect dead time valves either to large or to small with have a visible impact on the VE table. Basic Specifications. Slowly raise and lower injector on time (I did it by changing the AEM's injector dead time vs. Stock Curve Would it not make sense to have the injector Dead Time running at 100% during this voltage swing? Here is a picture of the new voltage curve, which is more or less a flat line between these two voltages. Grams Performance & Design fuel injector kits include all the necessary components needed for your application. hpt HPT4. Oct 22, 2020 · My initial idea was to display an additional row of buttons with input fields so you could increment/decrement your injector dead time on-the-fly to achieve different points in the scatter plot, to achieve the dead time estimate. 2V - using the dead-time I interpolated out of the RX-8 tables (to take into account the difference between the pressure differential my car runs at and that which the RX-8 injectors run at) and the RX-8 derived voltage curve I calculate the dead-time at 12. You will also need to alter injector dead time and small pulse-width calibrations to suit your injectors. Feb 3, 2003 · I'm a little late to the party on this one. I target an AFR of 14. 8. 8 V 17. i know i need to put this info in the injector dead time menu but it asks for percentages and i dont know how to get those numbers based off Jun 29, 2017 · As I said, the dead time is AD - BE with BE being a computed value that doesn't have any real position with respect to the injector commanded pulse width. What part of the equation is still missing? Also I noticed in the calculator you showed above Exhaust Valve Closing AFTER Top Dead Center: at 27 degrees May 23, 2022 · The ECU uses the VE map (dead times, injector flow, coolant temperature, and IAT to some degree) to calculate the amount of fuel that needs to be injected to obtain your target AFR / lambda. Oct 25, 2016 · Graphing that against injector pulse width will tell you the mass of fuel per per injector on-time, and the zero-intercept is the dead time. 9volts, so I will do it again when I have a charger to connect. You then can accumulate that number, and divide by distance if needed. 2 V 20. When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. I used the info under the Slope and Offset vs. Thanks for any and all help> Injector Lag time for some of the more popular injectors use in performance appliactions. Picking the proper fuel injector size is critical for performance and tuning control. calculate dead time - Apply the I mentioned earlier that James had measured it as 0. DW Injector Characterization Summaries are available on most DW fuel injector part numbers. Knurled GRM+ Member and MegaDork 10/25/16 4:38 p. Aug 15, 2011 · I applied a bit of maths to the volume measured compared to the expected volume in the ideal case (i. 74 0. To do this set the Y axis of the 3D Injector Dead Time Table to Differential Fuel Pressure. Unless you have a modified fuel system, 1990-1997 Miatae NA have 3. Mar 13, 2018 · I'm ok with using DEATSCHWERKS factory calculated data. 55; the event should occur 300. Once you're under load there shouldn't be any big changes as the dead-time is a much smaller percent of the overall injection time. 48 1. dead time compensated) duty cycle, and approximate engine HP. ). It is the most recent offering from the partnership of Injector Dynamics and Bosch Motorsport, and is the result of lessons learned during development of the ID1300x, and ID1700x. 2mS for that 1V drop. 3:1 or so and back. So if the real injector Dead time and the setting in tunerstudios are the same then everything is happy. 2V 16. May 11, 2018 · The dead time has some variation between injectors, lowest being 0,715 ms and highest 0,812 ms (at 14,0V, 350 kPa). 7 at idle. Start car, monitor the voltage then adjust the dead time till you hit stoich. Having accurate injector dead time settings (also known as injector lag time or latency) is critical for a quality idle as well as maintaining air/fuel ratios when there are lots of accessory loads on the engine (ie: headlights, heater, etc. m. Controlling a light modified Audi 1. Of course all other VE cells will need to be adjusted to suit as the base map isn't really ideal. Replacement components are sold individually May 24, 2017 · The base injector dead time is set @ 13. Overall, the dead time is pretty much what I expected for these injectors. Jul 6, 2011 · Correct dead-time (offset) figures for injectors are critical to good fuel injection operation. 7 ms area, and it is a bit jittery and not as smooth as the old engine was when I was running far smaller injectors. Do an XY plot. So that comes to something near 3ms as a rough guess without seeing all your data. 28 1. That is your deadtime. Do I need to change Rated Fuel Pressure and regulator adjustment to 400kpa, as well as make corresponding changes in Dead Time table and SPWA? Fuel Injector Clinic's Flow Rate calculator. Yet (90x5) = 450 + (5. If they are equal but non-zero, adjust the global setting. 5 psi FP. This calculator helps figure out what size injector would match your horsepower goals. 8vdc. Easy and practical tuning of injector dead time voltage correction. For this to work correctly a MAP sensor and If you have a guesstimate of the injector parameters the spreadsheet will calculate the number of squirts required to fill the measuring cylinder 90% full for each pulse width - saves on overshooting the maximum measurable volume and having to run tests multiple times while still ensuring a fill ratio that provides good accuracy. 85 1. 4ms @ 13. 22 0. The ECU will add this delay ("dead time") to the time it opens the injectors. 64 el camino Dec 3, 2013 · This time I had success, the dead time for my injectors is 0. Fuel Pressure Dead Time Correction . The above translation will get you very close i think, then if you want more, you can do the change the idle afr table by one point. If you use HPLC, then you will need to know what the column dead volume (or dead time) is to calculate the column void time. Jun 15, 2016 · PCLink Help > G4+ ECU Tuning Functions > Fuel > Fuel Setup > Injector Setup > Injector Information also has some info. Example 2: The horsepower value of this injector would increase by the same rate (X 1. only the idle cells, it's just a way to determine the dead time at x voltage. Oct 23, 2023 · Actual dead times vary with the driver too so they have to be calc'd as installed. May 18, 2023 · Next thing I did was calculate flowrate based on actual injection time, taking out 1 deadtime for each pulse. 62 0. 0V 16. Fuel only started to spray from the injector at 1. If you tuned with incorrect data before, it'll take a bit to get that ironed out. The offset value (often referred to as the dead time, lag time, or latency value) is used by the ECU to compensate for the loss of flow during the opening and closing period of each pulse, where full (aka constant or linear) flow has not been achieved. Fuel Injector Calculators. Mar 1, 2021 · My injector dead time is currently set to 1. It works by estimating airflow based on a few known parameters, and then calculating fuel flow directly from exhaust lambda. 2 V 16. 2V 20. 058. 04 Mar 28, 2015 · Hey guys I had a few questions about required fuel and injector dead time. 8TQ AEB 20v engine with Holset HE221W turbo, 299. However when I go into boost IDC is getting 120%+ it was even worse until I got the AFR's down where I want them. Lets just say for ease of understanding that the injector is pulsed at 20ms. 2V 12. 2V to be 0. Aug 21, 2019 · As Adam mentioned, your injector pulse width is quite high for 1050x's on a 1. 4 %âãÏÓ 11434 0 obj > endobj xref 11434 82 0000000016 00000 n 0000004673 00000 n 0000004856 00000 n 0000006530 00000 n 0000006830 00000 n 0000007256 00000 n 0000007776 00000 n 0000008535 00000 n 0000008763 00000 n 0000009434 00000 n 0000009548 00000 n 0000009664 00000 n 0000009949 00000 n 0000010571 00000 n 0000010860 00000 n 0000010975 00000 n 0000011302 00000 n 0000011593 00000 n If you have a guesstimate of the injector parameters the spreadsheet will calculate the number of squirts required to fill the measuring cylinder 90% full for each pulse width - saves on overshooting the maximum measurable volume and having to run tests multiple times while still ensuring a fill ratio that provides good accuracy. An Industry Leader for over 20 Years Injector Flow CC/min Flow LB/Hr Ohm 10v 11v 12v 13v 14v 15v Accel 578 55 3 1 24 1 03 0 87 0 73 0 63 0 53 Accel 872 83 3 1 46 1 20 1 00 0 85 0 73 0 62 Acura NSX 240 23 2. 43 0. Then based on injected volume you can easily calculatee the dead time. 5. Dial in injector tip temp as close as possible and idle controls somewhat close to where it will at least mostly idle smooth. the window gets smaller and smaller though If you have a guesstimate of the injector parameters the spreadsheet will calculate the number of squirts required to fill the measuring cylinder 90% full for each pulse width - saves on overshooting the maximum measurable volume and having to run tests multiple times while still ensuring a fill ratio that provides good accuracy. ) of 0. I could go from 11:1 to 16. -MS3X, (V3 PCB) 1. Oct 2, 2018 · dougs951s wrote:Does anyone have actual dead time values for 80# siemens deka IV injectors? Careful parsing of the data suggests a dead time of . They provide a dead time table on their website. I've found very similar results in the web for EV14s in the 500cc - 1000cc range. 0 BAR fuel pressure, and 1999-2015 NB/NC have 4. Different injectors respond at different times. 5psi 3 Bar 58psi 4 Bar 72. Fuel value can be found under Basic/Load Settings>Engine and Sequential Settings. Fuel injector dead time along with the other 4 definitions is the amount of time it takes the fuel injector to go from open to close. 8v, but May 29, 2012 · A guy (or gal) put MS3/3X on their car. See One with an offset (Dead time, latency, etc. Only took 20min or so to run through all the voltages 3 times and we've got Nov 1, 2023 · It is better to inject for example 100 times 2ms and 100 times 4ms. I also measured the dead time using a MS2 based ECU and got an average result of 0,80 ms (also at 14V, 350 kPa). The deadtime for 60's in that info you found is way off (too low), at least for the Buicks. The characterization summaries contain most data needed for proper tuning of DW fuel injectors. 67 = 670 2. I downloaded what I thought was the newest injector spreadsheet from Injector Dynamics, but unfortunately it still has the dead times in percentages. 5 degrees into the 4 stroke cycle. 8V 13. 0 V 8. (Dead weight) = (100% duty weight) - (run output weight) ii. Minimum injection time is calculated by subtracting the dead time at 14v from the minimum pulse width. 5 psi) Mar 2, 2011 · Cranking on V3 injector outputs is once per tach event, so on a 4 cyl engine you'll inject 1/4 the fuel four times. May 28, 2013 · grom_e30 wrote:So lookin at warm idle injector pulse widths I'm in the 1. 8 V 13. 25 ms at 13. 98 1. Changing your dead time corrects your fuel load around the dead time issue, but changing voltage looks like it is actually reducing dead time. 05 14 Volt 0. This value appears in micro seconds. You can use AEMLog for this, or MS Excel. 76 psi). 5 uL less fuel per injection event. 40 1. Actual injector pulse width time / total cycle time duration available at those RPM = Injectors Duty cycle % Example: 6000 RPM, actual injector pulse width is 15 ms. Injector Voltage Latency – Supplies the tuner with accurate fuel injector voltage offset (delay) data for various system voltages (8 volts, 10 volts, 12 Sep 8, 2006 · When running Utec code 5. I have looked up many videos on youtube and searched many forums but still cant figure out how to translate these numbers into tuner studio. 13 1. 7 Wich is 1. Aug 13, 2013 · And injector dead time seems to be approx 0,60-0,65ms. Or should these, theoretically, be the same? Mar 10, 2023 · Injector dead time calculator Post by MS2tester » Fri Mar 10, 2023 9:12 pm Could we have a calculator which gives the X as crossing point after you put in your CC values in a Ms colom!. Monitoring current with the scope when injector opens, you can spot easily the point when the needle starts to move. So my question, is there a calculation I do so that I can work out what the new values should be so I can convert my VE table to the new dead time values? Thanks Mar 14, 2022 · i. Aug 13, 2022 · hello all, i recently purchased a set of sl9-550 RC injectors. During normal engine operation, the fuel injector fires once during the four strokes of the Otto cycle, which last for 2 revolutions of the engine. 12 and the actual fuel delivered in that pulse (0. Other method is current probe. The example above implies a 1. Applicat Dec 22, 2019 · You will need to find 85 psid figure in that column and there you go- the rest of the data required is there in that 85 psid line: injectors dead time and new size. qci xvnsli acjszjz ehvmyafs iyake lwl soxic jvur vwtsjb glcth