What is the difference between HFC and test pipe?

Originally Posted by Westwood 12" are louder than 18" right? non resonated u talking about the tp's? and sorry if my english is not perfect i went to french school...

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What is the difference between HFC and test pipe?

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07-06-2010, 06:07 PM

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nolan1016

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Quote:

Originally Posted by Westwood

12" are louder than 18" right? non resonated u talking about the tp's?

and sorry if my english is not perfect i went to french school... excusez moi pour mon anglais

yes 12" are louder then 18" but you can also go no resonators on the exhaust. Test pipes comes in resonated or non-resonated.

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