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I hear this term used a lot and I would like to know what exatally a test pipe is. thanks
 

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a test pipe is a piece of straight pipe that replaces your catalytic converter. it is illegal to put on, but unless you have emissions testing then you won't get caught. it makes your exhaust louder and may free up a couple of HP on the high end. it can also make your exhaust sound raspy and rice like, but with the borla its supposed to sound awesome on our v6s.
 
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