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Message: <blockquote data-quote="ripper" data-source="post: 126129" data-attributes="member: 8987"><p>Thats what i was talking about. But the important thing is fuel air ratio and the x cal wont give you that. You will have to be careful you dont get a ping. Its hard to hear a ping on a supercharged car with aftermarket exhaust. Ya kinda need a trained ear. But after you flash the puter run it then run a diag. on it and you can send it to brent on tyour home puter. He will analyse it then make corrections. You download it to x cal then re flash car. Like i said it wont be 100% but it will be better than what you have now. It sounds like the last tune was on a new motor and the tuner didnt want the motor over reved so he limited the rpms.</p></blockquote><p></p>