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Thread: Piston faliure 6.2 whipple 7psi

  1. #101
    Quote Originally Posted by veee8 View Post
    You can dial timing up or down on individual cylinders vs. rpm in the Static Retard table.

    Yep, thats why I said usually. Some PCMs can do that, some cant. and also not many are going to take the time to figure it out either. I was referring to gen III stuff that cant do it, 4 and 5 yes obviously.
    Last edited by Nick@Newtech; 09-21-2017 at 02:07 PM.
    99' SS LSR 388 twin ETR billet 76s, glide, etc
    06' C6 Z06 885rwhp/796rwtq [email protected] E85 940/840
    07' TBSS Turbocharged 6 psi 525/505
    16' C7Z A8 Stock blower slow street car 815 RWHP

  2. #102
    Senior Tuner
    Join Date
    Jun 2004
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    Baltimore, Md
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    1,204
    Quote Originally Posted by Nick@Newtech View Post
    I agree its not a fix but it seems to help keep things more even. Doing a plug read after a pull on the dyno you can see the timing strap seems to be farther down on the rear cylinders than the front cylinders, on the flip side of that I have seen the exact opposite on various setups. Only other things i can think of would be distribution of air mass and or fuel, something a lot of tuners don't think of also is spark advance is usually global value, whats good for some cylinders are not good for others. this ultimately is what kills the one or two cylinders and the rest are fine.
    Its airmass distribution more than anything. We did the coolant crossover thing many many years ago before anyone talked about it, but in the end it seemed that me running staggered inj (ran richer ones in the rear) did more for that problem. Didnt have ind cyl timing control on those ecus yet. Things I thought about before and during when we were running Hot Rod pump gas drags (Won it in 06 I think?)

    Cant we just get a group buy on EGT and o2 sensors and run one in every hole? LOL
    Factory Stock 97 SS M6 13.51 @ 104.3 mph
    Stock Longblock LS1 w/ 233/238 P.S.I. Cam
    10.81 @ 126.9 Full interior, six speed on 275 radials, a decade ago

    '99 TA trunk mounted 76mm 6 Liter
    9.0s in '09 @ 153 MPH

    Turbo 5.3 Volvo 740 Wagon
    32psi and still winding out 5th on the highway somewhere