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Thread: Flaring idle after cam

  1. #1

    Flaring idle after cam

    So I'm sure I will seem like a newb here but here goes. Just installed a custmo 231/235 .617/.620 112+4 (7.400 hardened pushrods, prc .650 duals) cam in my GTO. Ported stock intake/lt's/vararam/udp/ported tb.

    I got most of the tune great. WOT is perfect and it drives pretty good. Just a slight surge around 1500rpms or below sometimes. The problem is the idle. It idles fine then boom it drops to like 400, then goes to 1200 or so. The air/fuel is all over the board during this. 12 to 1 to 22 to 1 while its flaring. The timing was about 5* before and I got that up to about 13-15 and that def. helped but is there something obvious I'm missing here?

    Any help would be appreciated, thanks.

    Edit: I have used hptuners for a while and the tune was perfect before the cam. Car is an M6 btw.
    Last edited by 02GTP; 07-20-2012 at 11:50 AM.

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  3. #3
    I will try that, thanks.

  4. #4
    I tried that and it works ok at times. The car won't start w/o help. Once I press the gas a bit the idle will settle out but I have to help it.

    Here is a log. Can anyone offer any other suggestions?