325 exhaust
Posted: Sun Sep 06, 2009 10:02 am
how restritive is the std mid section
would i benefit from straight piping it.
would i benefit from straight piping it.
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Re: 325 exhaust
Posted: Sun Sep 06, 2009 1:57 pm
Only really make it louder mate. Standard BMW exhausts arnt restrictive at all really. If your looking for bhp gains you want a quality 6 branch manifold. Use the search function at the top of the page to find andymn. I know for a fact he has a very nice one for sale. I cut through his middle section yesterday so he could remove it.