Quote:
Originally Posted by Verio
Yeah, I understand that. But... my point is, my dealer put 87 in the car, I know he did because he told me. There is an underlying issue here on why some cars ECU is not readjusting to the different octane levels as they change. I've only put 93 into it since I picked it up.
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Agreed

...like I said in my above post, this is a "hack" fix....It's up to GM to provide an update to REALLY solve the underlying problem.
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2010 1SS/RS - CGM/Gray Interior - M6 (SOLD) Kooks 1 7/8" headers, Solo Mach-X, Vararam.
2012 2LS - Black A6 (SOLD)
2016 1SS Summit White A8