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duds64

15 September 2013 03:34 PM

down pipe

What are the benefits of 3 inch down pipe compared to a 2.5 inch down pipe?

Kedlestone

15 September 2013 07:34 PM

Better flow rate, less exhaust back pressure..

nyscooby

15 September 2013 08:29 PM

None. 2.5 good for 500hp.

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