Quote:
Originally Posted by Shu71
Again the manual transmission cars do this just like the automatic cars. I don't think it is a transmission issue but rather a tune issue or poorly designed exhaust issue which is allowing reversion to occur. If the later is the case, it may explain why GM redesigned the 2012 v6 heads to incorporate the exhaust manifolds. If it is a specific load, rpm, timing curve, afr curve, map position stumble, then GM needs to recall and preprogram the cars tune. This is why I asked if anyone with a Trifecta tune had the issue or if anyone with long tube headers has the issue. If either of those tuned it out, it's a TUNE issue not a transmission one.
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OK thanks for the clarification. I now understand what you are saying after reading further up the thread. Thanks.