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Thread: 2009 G8 GT KR at track in 3rd gear

  1. #1
    Tuner in Training
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    2009 G8 GT KR at track in 3rd gear

    I need some help. I logged my runs at the track yesterday (stupidly without my W/B) and I have terrible KR but mostly in third gear which seems to be slowing the car down alot (that and my 60'). I've attached my tune and both logs. My mods are Kooks 1 7/8 LT's, catted X pipe, Pypes A/B, Vararam, and a dyno tune. The car was dyno tuned back in March and made 348 rwhp at 5500 rpm and 362 rwtq at 4600 rpm. No changes have been made to the tune. Please take a look and see if anything jumps out at you (besides all the KR).

    Attachment 35972

    First run was 13.27 @ 107.43 with a 2.071 60'.

    Attachment 35974

    Second and final run (hot lapped) was 13.272 @ 106.55 with a 2.042 60'. I left after this run because I had a minute to look at the log and saw all the KR.

    Attachment 35975
    Last edited by JJaiman; 08-30-2012 at 09:00 PM.
    1998 Sebring Silver Camaro SS Vert A4
    H/C/I, Gears, Converter
    2009 Stryker Blue Pontiac G8 GT
    Kooks 1 7/8 LT's, Catted X, Vararam, HSRK, EFI Alchemy tuned....348 rwhp 362 rwtq
    2007 Black Raven Cadillac Escalade
    Vararam, 2" leveling kit, 305-45-22's

  2. #2
    Senior Tuner Mep_q8's Avatar
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    out of curiousity, was it tuned on a dynojet with no load?

    set your Retard Decay Rate back to stock settings and log.. alter your ignition timing by testing the car on the road not a dyno. My biggest problem with the G8/Commodore/Lumina platform is their crazy high IATs, but yours seem to be perfect. You should be getting away with at least 22-23* of timing with no knock.
    Last edited by Mep_q8; 08-31-2012 at 03:34 AM.

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  3. #3
    Tuner in Training
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    It was tuned on a dynojet but I don't know if they put a load on it or not. I'll change the retard decay rate and take some more logs. Thanks for the advice.
    1998 Sebring Silver Camaro SS Vert A4
    H/C/I, Gears, Converter
    2009 Stryker Blue Pontiac G8 GT
    Kooks 1 7/8 LT's, Catted X, Vararam, HSRK, EFI Alchemy tuned....348 rwhp 362 rwtq
    2007 Black Raven Cadillac Escalade
    Vararam, 2" leveling kit, 305-45-22's

  4. #4
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    your injector data never went above 13m/sec at wot...also the ltft's seem a little on the lean side, was your maf calibrated??
    Last edited by FASSTRUK; 09-01-2012 at 02:18 AM. Reason: correction