Why are you switching to the fast intentions? They theoretically dyno to very similar numbers, I'd agree that the f.i. is better sounding and better quality but I dont' see how its worth losing 500 dollars on the stillen. When did you buy the stillen catback? I"m looking to do it with a berk hfc so the early fitment issues along with it being a used part is what is on people's minds.
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