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Old 05-30-2016, 05:52 PM   #581
RedFRS4me
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Join Date: Nov 2013
Drives: Firestorm '13
Location: Portland, OR
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Garage
Bad gas can screw up this tune really good. I had that experience this weekend driving a total of 400 miles. The second fill up I had some nasty 92 gas that made my car knock even with light engine load throughout 2.5k-5k rpm. IAM dropped to .69 and kept knocking like an persistent door salesman. IAT were in the low 80s to mid 70s.
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