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Type: Posts; User: NotSure

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  1. I am entering .050 as that is the only spec I...

    I am entering .050 as that is the only spec I have. But this is a stock cam, so the overlap is like -35 or something. I ran it today and with the 100 degrees advance (Normal RPM chart) taken out of...
  2. If you expand the scale of your VVE chart out, it...

    If you expand the scale of your VVE chart out, it will show the trend that your coefficients are creating even in areas beyond where your engine will ever see. I have found that extending the scales...
  3. Gen 4 fuel injection timing strategy - boundary settings

    I have read posts on injection timing until dizzy, and it seems there is a consensus that GM attempts to inject on a closed intake valve to aid in vaporization, though there are some other thoughts...
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    Are you all talking AFR for E0 fuel? Because,...

    Are you all talking AFR for E0 fuel? Because, say, 11.5 for E0 would really be around 11.0 for E10.
  5. Thread: fpcm tuning

    by NotSure
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    Don’t have an aux pump, never tuned for one, but...

    Don’t have an aux pump, never tuned for one, but what I get from the DSX article is maybe you set the High Flow at a lower pressure than at Normal flow, and put it to go into high flow at as close as...
  6. Update on this. After a month which includes...

    Update on this. After a month which includes various tinkering with the engine and FSCM cal, long term fuel trims are still at 1.13 across the board, they have never wavered. Any changes I make to...
  7. Thanks to everyone for the replies, zeroing ac...

    Thanks to everyone for the replies, zeroing ac torque reduction was the fix. Finally got around to driving it to confirm. Seems so simple now. So far I haven’t needed to adjust the ramp in/out for...
  8. Thanks for the replies, I completely spaced the...

    Thanks for the replies, I completely spaced the idea of a/c operation. I do remember just after the whipple install I reduced the a/c torque reduction (ECM 12888) about 20% at the 45 kpa MAP column,...
  9. Intermittent timing dropping to nearly zero at steady state cruise, repeatedly.

    This has been annoying, it causes a single "bump" when it happens, like a quick tap on the brakes.

    Stock Gen4 6.2L with 2.3L Whipple. I have attached the cal and a small section of log where it...
  10. https://dsxtuning.com/blogs/dsx-tech Maybe...

    https://dsxtuning.com/blogs/dsx-tech

    Maybe this will help?
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    I wouldn’t disable PE. Filter the data instead...

    I wouldn’t disable PE. Filter the data instead if you don’t have the wideband installed yet.
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    Raise the closed loop enable temp to something...

    Raise the closed loop enable temp to something you won't reach.
  13. Does anyone have a stock file of a supercharged...

    Does anyone have a stock file of a supercharged Gen4, WITH the FSCM, such as a 2013 and prior CTS-V or ZL1? The tune repository has a couple of cals but it doesn't look like they included the FSCM...
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    Are your O2's plugged in? They are flat. You...

    Are your O2's plugged in? They are flat. You have a wideband, force it to stay in open loop and tune off of that. Also, clear your fuel trims before logging, each time to be sure.
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    Have you made adjustments to the fueling per the...

    Have you made adjustments to the fueling per the previous recommendations? Put the HO spark table back to stock and monitor knock retard. Leave the low octane table stock as well. If you want to...
  16. Thread: PE Question

    by NotSure
    Replies
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    334

    You can use a slope delay of the accel...

    You can use a slope delay of the accel pedal/throttle, such as:

    [50091.156.slope(200)]<5 and [50091.156.slope(-200)]<5

    Your PID number may be different depending on what you are logging, this...
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    I have changed injectors, they are now...

    I have changed injectors, they are now Deatschwerks 72lb. I'm guessing that as long as I pay attention to IVT, any fueling changes I make should be in a similar injector tip temp range, IF there are...
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    I could not open the tune file, says there is a...

    I could not open the tune file, says there is a newer version and for me to update my software, don't know why.

    Besides that, did you pull a bunch of spark out? In your log, you hardly ever get...
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    Not hijacking this thread, but was just reading...

    Not hijacking this thread, but was just reading up on transients which led me to the comments on injector tip temp. Found my stock file to be zero'd out! ECM 12303, Injector offset vs Injector tip...
  20. FSCM (FPCM) long term and short term trims - relearn

    I recently made some changes to the DC multiplier chart based on a consistent 1.13 LT trims and 0.96-1.02 ST trims, multiplying the entire chart by 1.13. Now my LT trims are still the same but ST...
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    There are separate patterns for Normal and Tow...

    There are separate patterns for Normal and Tow Haul, which could be called Pattern A, or B, whatever. Log it and see which one is tow haul. You could try lowering your 2-1 downshift speed at 0%...
  22. FPCM has an IFR delta pressure hard limit of 63.5 lbs, but the E38 does not.

    This is a Whipple'd 6.2L with 72lb Deatchwerks injectors.

    I entered the injector IFR data to the ECM with no issues all the way up to 768 kpa delta pressure, but when I try to match the FPCM's...
  23. Thank you Bill. I will be buying one just for...

    Thank you Bill. I will be buying one just for that purpose.
  24. MVPI2, editing and saving files without licensing

    Regarding the feature of being able to edit and save files without licensing, how is this communicated to your Suite program? I have a MVPI1 Pro and a MVPI1 standard. One is semi permanently wired to...
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    Sticky: Regarding the feature of being able to edit and...

    Regarding the feature of being able to edit and save files without licensing, how is this communicated to your Suite program? I have a MVPI1 Pro and a MVPI1 standard. One is semi permanently wired...
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