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are you boosted? otherwise a 3 inch exhaust is not necessary by any means. many always think that bigger is better when it comes to exhaust, but that is false. there is a post that explains all of it, run a search. basically if its too small, the pulses are backed up and cause too much backpressure, and if its too big, the pulses dont flow straight in the pipe, they bounce along the sides in a sense.
-quikflip
 

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quikflip27 said:
are you boosted? otherwise a 3 inch exhaust is not necessary by any means. many always think that bigger is better when it comes to exhaust, but that is false. there is a post that explains all of it, run a search. basically if its too small, the pulses are backed up and cause too much backpressure, and if its too big, the pulses dont flow straight in the pipe, they bounce along the sides in a sense.
-quikflip
it's useless even if he is boosted unless he is making more than 260whp. if not he'll be slower than if he had a 2.5" pipe


but to answer his question ebay should have 3" test pipes
 
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