I want to point out that this technically isn't that bad. Stock tunes are setup to start at a IAM of 8 so I understnad its knocking but its not like its much worse then stock. Also Im not stating he doesn't need a tune either.
Just my .02
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MAYHEM TUNING
2006 CGM STI
570WHP
539WTQ
10.6 At 136MPH Sacramento
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