Injector dead times. My closed loop voltage target is set to 2.
Injector dead times . Slowly raise and lower injector on time (I did it by changing the AEM's injector dead time vs. 4v 19. Jul 23, 2013 · Do i still have to have it retuned and figure out the dead times and offsets for the rdx injectors ? i just got tuned with stock injectors and would like to switch to rdx injectors. Mar 8, 2010 · MX-5 Miata Forum > NA/NB (1990-2005) Miata > NB (1999-2005) General discussion > Stock injector dead times Reply Thread Tools: Display Modes: As Ludo mentioned, the units psi d refers to differential pressure. 846 Flow rate according same source is 490cc/3bar/80% Duty cycle. 35 0. Nov 3, 2011 · what dead times really only do is make sure the injectors are opening enough to get the amount of fuel needed to keep the AFR's in check when the volts drop since they will taek longer to open with less volts now hook your fuel pressure vac line back up and enjoy. 05 14 Volt 0. 4V 15. The effect varies with load, so under full load there is less effect than at very light load. Attached Files. Increasing them will add fuel. 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. 19 0. 7v 10. 5psi 3 Bar 58psi 4 Bar 72. if fueling was dialed in correct with stock injectors theoretically i should be able to just input 410cc on the injector size and choose the rdx injectors from the Feb 4, 2016 · That'll be because the ECU is allowing the injectors to open longer, dead time + open time = injection time (crude and basic summery), so a bigger number in the dead time will mean the ECU starts opening it that bit earlier allowing more fuel to be delivered, which should be the proper amount now. Jul 1, 2023 · Fuel pressure can be tuned and it has many benefits playing with it. 02:28: While the injector dead time varies with battery voltage, it will also depend on the amount of fuel pressure too. 538 12V 0. as the fuel pressure increases it pushes more on the needle and makes it harder to open, hence higher dead times. Battery correction: 0. Mar 1, 2014 · Reusing the same dead times as the stock 310cc injectors is not correct and the actual dead times of RDX injectors are much different. 2V: 0. As the battery voltage drops, we have less voltage available to drive the injector, so the dead time increases. 00 0. 6V 10. Injector dead time will differ from the manufacturer spec if the "flyback" voltage your ECU applies to the injectors is different than that Feb 18, 2023 · you mean voltage depended injector dead time? Download KManager from Hondata and load the stock base maps. May 2, 2011 · Entering the dead times and flow rate for my idle fuel pressure. The characterization summaries contain most data needed for proper tuning of DW fuel injectors. 46 0. These injectors are universal fit, sold individually. 60 We would like to show you a description here but the site won’t allow us. 2V 20. This latency is often referred to as injector lag, dead time, offset, or delay ( ip_ti_add_dly__vb ). Bosch Part Number: 0 280 158 333. 8 V 17. I suspect its running rather rich and so you are having to feed it ~10% throttle to stay at idle. Injectors are tested using the MS3X outputs. Scaling the dead times by a small factor which seemed to help (doesn't seem like I should need to do this). 74 0. This is the difference between fuel pressure and manifold pressure. They'll be pretty close: Mar 11, 2010 · First, we've found that the advertised injector opening times are often quite different from what we measure. The Injector Dead Times for the PFU43-1200 are as follows. The values look ok. 4V 19. sounds like brrrrr putt putt puttt brrrrrr and then threw a CEL. 15 0. , Megasquirt 1. Nov 1, 2023 · It is better to inject for example 100 times 2ms and 100 times 4ms. 8V 13. 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. I've got a Haltech Elite 1500 and I've gone to a better quality injector to possibly help with an idle issue that I've been having. 98 1. The only way to correctly set the dead times is to use a known (stock) injector and tune the idle / part throttle on those injectors first, then switch in the big injectors. Oct 16, 2018 · First time for me trying to figure out a dead time for an injector so would like to know if I did it correctly. Lowered my target A/F ratio. 0v so it adjusts to ~af14. Injector Dead times can be validated using the Emtune Software by using the Wideband Lambda control. 5. 64 Part No. 40 0. 44 0. 0 1. 99 - 2. 2 V 16. Then based on injected volume you can easily calculatee the dead time. The reason this is important is that both the flow of the injector and the deadtime values will fluctuate as the differential pressure varies - Let me explain a little more thoroughly: We would like to show you a description here but the site won’t allow us. The ID2600-XDS has the highest flow rate of any injector offered by Bosch, and flows 50% more than the ID1700x. 2V) and the voltage correction (offset per volt) directly from the chart. x and older, 1. If low voltage makes the engine run rich that would suggest that the dead times are too high. 0V 8. 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 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. Mar 12, 2018 · The injector dead times are very low (BTW the ID supplied dead times are also very low). ly/freetuningCome along to our next free LIVE webinar to have your own questions answered - Oct 14, 2015 · Here is an example of what the dead times would be for the 1000cc Injector Dynamics injectors setup within KManager for a car who has 50 psi of fuel pressure. x and newer, and updating from 1. 8V 9. 9v 15. 40 1. During my quest to find the injector dead times on the injector I'm certainly using I found the following post on a forum: ''Getting the injector dead time correct is important for getting a stable, accurate idle, and accurate AFR's while engine braking. DW Injector Characterization Summaries are available on most DW fuel injector part numbers. Thread starter Big Al 389; Start date Nov 4, 2007; This site may earn a commission from merchant affiliate links, including eBay, Amazon, and others. 81 1. I've found very similar results in the web for EV14s in the 500cc - 1000cc range. 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. 5psi 3 Bar Mar 8, 2010 · I've been playing with injector dead time a bit. Nov 30, 2019 · The dead times in my personal car are below, and I spent several days in different weather conditions verifying they are the best possible: (first value is voltage, second value is dead time) 7. 1ms and 0. This is considered fine tuning. 6 V 14. 5psi" That they are advertised at. Repeat at whatever voltages the dead time table in your ecu needs. We would like to show you a description here but the site won’t allow us. Injector Dead Time So now we can go to the spreadsheet for a visual representation of static vs. Funny thing is at 5gear / 80km/h theres no problems. If the injectors are very close to the Injector Dynamics 1700cc injectors, i would see how close this data is to them and maybe just use the ID data as it is more complete and will work better if trying to use the modelled fuel mode. 70 0. 5 psi base pressure. 13 1. 00, 12. Learn how to convert injector dead time settings for your MS3Pro, covering firmware versions 1. 0 V 12. Bosch-0280150558. x to 1. Oct 2, 2004 · Injector Dead times. Aug 3, 2017 · In my current setup i have Bosch EV14 550cc injectors (0 280 158 117) and i've had some trouble with setup. 45 12 Volt 0. If this would yield 95% of cc/min the dead-time should be somewhat close to 1ms. 6 V 10. Pressure was at ~51 PSI As a result of all this, the actual fuel flow from our injector will be less than that predicted by static flow testing. INJ - 139 Base Fuel Pressure in psi / bar 29psi 2 Bar 43. Ignition in the idle region of the tables is set to 18. 64 0. 2V (that being the 100% point in the current dead-time / voltage curve) but just that the curve has to have that value as the 100% value, regardless of the voltage. Here's how the process typically works: Electrical Signal: The engine control unit (ECU) sends an electrical signal to the fuel injector when it's time to inject fuel into the combustion chamber. Injector Dead time is the natural Mechanical time it takes for the fuel injector to respond after a pluse from the ecu. It takes into consideration both opening and closing time. 81 16 Volt 0. Sep 8, 2006 · When running Utec code 5. Other method is current probe. Injector Lag time for some of the more popular injectors use in performance appliactions. battery voltage, across 3 cells, straddling the battery voltage that I was seeing). We think its the injector deadtimes that are off so how would one go about fixing this. 22 0. 8 you must enter the Correct Injector Dead time or Injector Latency. Grab your fuel injector dead times and flow rates with Nthefastlane's complete Fuel injector list. 2 V 20. Injector 0280155868 has a 12 Ohm resistance. 24 1. 60 seconds at 100% duty on one injector is the absolute max output my real-world system can provide and therefore is A: The flow rate for the MS3 require fuel calculation and B: the target weight for my dead time measurements. Dec 2, 2017 · Re: Injector Dead Times Post by Dennis_Zx7r » Sat Jan 20, 2018 4:26 pm NigeT wrote: Am I right in thinking that the dead-time setting in MS-3 does not have to be at 13. 4v 12. Aug 21, 2019 · As Adam mentioned, your injector pulse width is quite high for 1050x's on a 1. Check the shart term fuel trim at various steady state load levels, and check your short term fuel trim is close to 0. 5psi 5 Bar 8 Volt* 1. If not, you have not got everything Oct 23, 2023 · Actual dead times vary with the driver too so they have to be calc'd as installed. I currently have it set at stock injector-240cc, current injector-1065cc as it states on ID’s website for 43. 4 V 15. For RC750cc you'll need values of around 1. 0V 12. 5 and cam angles are set to zero as well. This collaboration has given us the ability to design a high flow injector with characteristics specific to the needs of the motorsport tuner. Dec 21, 2009 · When i switched to the RC750cc they idle kinda rough. They also flow slightly less than the "410cc @ 43. 8 engine. Adjusted IAC duty cycle both directions. I've tuned 2 Evo 10's now with dead times at what ID recommends on their site and with the same dead times I have been using with the ID1000 for years! For some reason these ID1050x run rich at idle, and lean under Injector dead-time @13. jpg; A range of dates and times are available. 0V 16. 8-13. if you have 3 bar fuel pressure but also 3 bar in your intake manifold, even if you open the injectors there will barely have any flow. Would that work or am I miscalculating something? It would be quick, only one test needed. 0V May 14, 2018 · I am looking to find out if anyone else is having any kind of issues with rich and lean spots after installing ID1050x injectors. Different injectors respond at different times. Aug 17, 2017 · 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. 6 V 18. The tables should contain the correct injector flow rates and death time tables. Mar 28, 2018 · if you have a fuel pressure sensor wired into the ecu, I would set it up with a 3d table and enter the dead times just as they are there. 85 1. 15ms to all the injector opening time values. Test was done in the car at 13. If you add 10% to your VE table (@ 3000rpm / 80kpa load for example), you should see a corresponding negative 10% trim applied via the Wideband lambda control. I havent heard many people having this problem. Learn more about EFI tuning instantly, and for FREE - http://bit. 07 volts: I Dead Times MS2 users should use only the base dead time (at 13. 9v MS: 1. dynamic flow characteristics. Getting your injector dead times can improve idle and throttle response. May 5, 2022 · What do you guys do when injector dead times provided by the manufacturer don't seem to work with your set up? I used the numbers provided on their site for "plug'n'play" with the Haltech Elite. The ID1300x² is an all new injector, designed in partnership with Bosch Motorsport. 43 0. 02:34: This is because the fuel pressure is working against the internal valve in the injector, forcing it closed Sep 4, 2014 · The values look ok. 00 for the volts and the values will get updated by KManager but the dead times follow the above table. Bosch 1650cc stainless steel internal injectors. When your engine is running at lighter loads, the injectors deliver short pulses of fuel. 0. 00, 16. ). 98 10 Volt 0. You can correct the dead times and then perhaps reduce fuel based on the measured injector duration at each load point. 58 0. 00 We've found that the injector dead times listed on various websites are far too low. So I have a MSPNP2, and the car runs fine, but i'm just wondering if i can make it run even better. Volts: 8. 4 V 11. 4V 11. You can input 8. INJ - 153 Base Fuel Pressure in psi / bar 29psi 2 Bar 43. May 11, 2013 · I currently set the dead times to the 70psi values and injector size to 850cc at 60psi, as suggested by Tony. Fuel pressure, voltage, injector design and even fuel temperature will change the dead time. 8ms @ 16V, so add between 0. 6. CEL read misfire in cylinder 1,2,3,4 and a random misfire. 37 0. MS3 users , Haltech ECUs , and ME221/ME442 (ME2x) systems running modern dead time models (e. 2ms @ 12V and 0. MS has an injector test mode so you can do testing your self. I'm running recently cleaned 01+ stock injectors. 2 V 12. 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. The ID2600-XDS benefits from Dual Slope Matching, a method of matching the flow rate in both the linear, and nonlinear operating range, providing better cylinder to cylinder consistency at low pulse widths. thanks! Sep 15, 2018 · I dont know if it is the dead times or the stock injector/current injector (fuel multiplier) pulling so much fuel that the injector is operating at too small of a pulse-width. 53 0. Open the Injector Dynamics spreadsheet, and click on the Dead Time Calculator 8. Dead times according Ford Racing are 14V 0. 2v 13. Monitoring current with the scope when injector opens, you can spot easily the point when the needle starts to move. Also known as Battery Offset and Dead Time. For columns 9 and 10, around 5% increase across the range to get afr to 12. 26 0. Other than that, just use the 1600cc dead times in this list, and tweak/tune from there. 8V 17. Dead Times (latency) Fuel injectors are designed to deliver a specific volume of fuel every minute, for example, Flow Force Injectors deliver 640cc of fuel every minute they are open. And adjust dead time so it tracks. 0 V 16. Jul 6, 2011 · Log MAP, AFR, Battery volts, and Injector electrical pulse width, while idling. 80 0. Simplify your tuning process with accurate injector data for a clean startup and idle. I would re-tune. 48 1. 2V 12. They are also available as kits for Mitsubishi Lancer Evolution 4G63 as well as Nissan Skyline RB20/25/26 setups. NA builds can be good at static pressure, while boosted engines need either a rising rate fuel pressure or just a higher than normal pressure, but that can run a fuel pump harder. 1v 20. Only took 20min or so to run through all the voltages 3 times and we've got ourselves a very accurate injector dead time table. We all know atomization is typically better with higher pressures. 72 0. 775 ms. A lambda reading would confirm this. g. 02 0. 4 V 19. This value appears in micro seconds. 0 V New** Holley EFI Injectors MPFI 19 lb/hr (PN 522-198) 19. 63 1. See attachment. Mar 1, 2023 · Some injector service centers that provide service sheets can calc dead times and voltage offset information for you, though you'll need to send them in and have them tested, and ASK for this service up front. 120 ms/V. From what i've read, the right injector dead time would make the car run a lot better. 0 V 8. 62 0. 12 Apr 22, 2020 · Differential pressure is recommended because that is the way injector work. The engine computer will power the injector on Jan 15, 2018 · I have found injector data that is very subpar however uses fuel pressure rather than differential and everywhere teaching to tune shows you should be using fuel pressure differential x voltage again using a dw set of Bosch 1000cc injectors ! 1 more thing to touch on injector short pulse width adder? The ID1050x is the evolution of the ID1000, and the latest addition to the X-Series. 2 volt with a power-supply and big capacitor to smooth out any pulses. 6V 18. The data is collected in-house using our custom digital precision flow benches and in accordance with SAE J1832 guidelines. Here's how to tune the dead times. My closed loop voltage target is set to 2. x. xx firmware) should instead use the calculated dead time in microseconds (µs) , derived from the Mar 31, 2019 · What if you run the injector cycles accumulative to 1 minute and than compare to cc/min? Like a pulsewidth of 20 ms run 3000 times. 2V 16. Injector Off Times to use with Terminator X and Terminator X Max ECUs 8. 6v 17. 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. 28 1. Start with a completely stock engine and a stock eqivilent calibration. 8 V 13. 00, 14. Oct 1, 2021 · I use the injector flow rate to determine the theoretical target weight. Mar 4, 2016 · You can adjust the injector time and pulse number if you have super high flow injectors etc. 00, 10. Jan 17, 2013 · This info is straight from Precision Turbo Engine (PTE) The only tuning software I have run is Hondata S300 SManager. However, i still had make considerable fuel changes to the map. 8 V 9. The graph below shows the low pulse width portion of the flow vs pulse width curve for the Injector Dynamics ID1600 injector at 14volts, 3 bar differential fuel pressure. Sep 30, 2013 · It didnt help with the "bugging" problem. Every fuel injector type has a unique minimum injection time and latency for it to fully open once energized. 6V 14. Applicat Injector DeaDtIme charts Part No. 85 0. The X Axis is the actual pulse width applied to the injector in milliseconds, and the Y axis is the volumetric flow, in microliters, for a single pulse. 30 0. Our recommendation is to set the injector opening times when you first start tuning. qrxycfbwopcmjgegidrifojtfuhzbuipiobqyupfhmlqfprpvbqebtq