Thread: How much HP 2.5 exhaust?
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Old 08-19-2013, 07:31 PM   #6
jcmG8
 
Drives: G8GT
Join Date: Jan 2011
Location: Vermont
Posts: 90
the magic number is 2.2cfm /HP. Any more flow is a waste of money.

Here is a decent unbiased article with science behind exhaust system design
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