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      04-22-2008, 07:25 PM   #7
Italteen3
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Drives: 135i JB
Join Date: Feb 2007
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Quote:
Originally Posted by JohnnyTT View Post
I'm interested, but have a question.

If the pipes go from 3" to 2.5" doesn't that make the 3" part a waste of space since the shrink to 2.5" will restrict it?

Thanks.
Nope. :smile: It starts at 3" tapers down to 2.75" and then to 2.5". Has been proven to easily make 20+ whp. I believe some have shown close to 30whp with just these DPs!
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