Quote:
Originally Posted by luigi90210
while im not doubting the stock muffler blowing
test pipes make your exhaust run cooler since there is no cat, cats heat up the exhaust since they need to run at 600F+ in order to work
i think it cant handle the extra flow if anything
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Replacing my cats with test pipes & a tune gave me more H.P. than anything I could think off. Since I did it for power not sound, I'll just leave that subject to you guys/the experts....