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Old Sep 15, 2013 | 03:34 PM
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duds64
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Default down pipe
What are the benefits of 3 inch down pipe compared to a 2.5 inch down pipe?
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Old Sep 15, 2013 | 07:34 PM
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Better flow rate, less exhaust back pressure..
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Old Sep 15, 2013 | 08:29 PM
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None. 2.5 good for 500hp.
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