Quote:
Originally Posted by chris82
I wonder if that's true and how can we find out? If so I'd probably consider replacing mine with the Supersprint straight pipes.
Only one way to find out! Maybe that is why you are not seeing the gains that the N52 guys are seeing with your AA headers.
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Next year I'm custom fabb'ing my exhaust so I'll replace them with 100 cell hi-flow cats and we'll see.