02-16-2010, 12:51 AM
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20psi boost
Join Date: Dec 2009
Location: Harrisburg
Posts: 759
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Is exhaust too big?
I have a hks 3in turbo exhaust on my 7mge. From what i have read it seems 2.5in is the way to go because back pressure is needed. But if i have a pacestter header with a 2in collector how is that not enough restriction for back pressure? I also have a 3in high flow cat on it.
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