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Thread: 14 CTSV rich WOT pull in 2nd gear vs 3rd gear

  1. #1
    Advanced Tuner
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    14 CTSV rich WOT pull in 2nd gear vs 3rd gear

    14 ctsv m6
    -airaid
    -ported blower
    ID850s
    -test pipes
    -2.35" upper

    Any of you guys experience having a more rich WOT pull in a lower gear than higher? I have already got my ITT table dialed in for the higher temps so i'm not overly rich while heat soaked. Normally my fuel is pretty well spot on everytime i've logged, but this time I noticed my injector PW went much higher towards the end of 2nd gear vs. the end of 3rd gear. I did notice that i got up to the 12300 hz range in 2nd gear and not in 3rd so maybe i just need to take a few percent out of my maf curve in that area. This was right after I flashed the car though...not sure if that had anything to do with it as I've read that you should drive around for 10-15 min to let everything stabilize. Ignore the small amount of KR at the end of 3rd gear as I've already got rid of that. Any thoughts/suggestions would be appreciated. The WOT pull starts at the end of the log

    On a side note it looks like that my maf is maxing out at 655 g/sec. Is this normal for Gen 4s? I have never noticed this before

    2nd gear WOT fuel rich.hpl
    2.35 pulley, ID850s, CURRENT TUNE HUMPLESS SPARK TABLE.hpt
    Last edited by sgod1100; 08-09-2020 at 04:25 PM.

  2. #2
    Advanced Tuner
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    After reviewing my log in a little bit more detail I'm leaning towards having to pull a little bit of fuel out of my MAF curve about 12000hz...i check multiple WOT pulls that i have done and 99% of them i was just under 12000hz and fueling was good

  3. #3
    Advanced Tuner jsllc's Avatar
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    Sep 2015
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    Bozeman, MT
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    Too much timing up top. 15 is about it up top and other places will create knock if loaded (higher gears).
    2012 ZL1 - Maggie Heartbeat, Port & Polish Heads, Custom Cam, Custom rotating assembly, steel sleeved LS9, No NOS and No water meth. 16psi
    810rwhp and 820rwtq 91 Octane 6400 rpm
    948rwhp and 951rwtq 105 Octane 6400 rpm
    999rwhp and 997rwtq on 60% Ethanol 6400 rpm