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      07-23-2012, 03:58 PM   #10
z4z4z4
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Drives: 2002 M3
Join Date: Mar 2010
Location: mild mediterranean breezes

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Quote:
Originally Posted by ///MIKE View Post
What sort of gains are we looking at here?
Other N54 downpipe manufacturers claim dyno results with
Gains up to 20hp and 30tq to the wheels.
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PM for various e89 parts 4sale.