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Thread: Big off idle stumble, whatt first? IFR? calc.vet? Something else I'm missing?

  1. #181
    Joe (Moderator) joecar's Avatar
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    Which cylinder had the least effect (or lack of) when you disabled it...?

  2. #182
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    Quote Originally Posted by joecar View Post
    Which cylinder had the least effect (or lack of) when you disabled it...?
    From the driver's seat they all felt the same, so I was hoping it'd shake out in the logs but it doesn't appear to have so I'll need to swap injectors and remeasure EGT I think. Blower has to come off for that, so yay.
    1998 GMC Sierra K1500 5.7/4L80E, longtubes, 411 w/COS 5, marine cam/intake, Whipple. 91 octane at 6000'.
    1997 GMC Sierra K3500 7.4/4L80E, 411 w/COS 3, Whipple, small cam.
    2004 Corvette Z06 with longtubes.

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