start at the front...clean air filter?.....strong maf?....good plugs?...plug wires?...any vacuum leaks?(check all hoses any way!)
and then is it tuned? with your mods would be a good idea...keep the exhaust valves from burning out(car is running lean..guaranteed)..
btw - put your mods in your sig...saves time!
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2010 SS 2SS M6 - Tune by RDP dynoSteve!(Woot) - Daily Driver - 150K! - All work by me...
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