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911st 911st is offline
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Join Date: Jan 2004
Location: Sacramento
Posts: 7,269
Stole this pic of a log style system from another post.

Originally Posted by Steve W View Post
High exhaust velocity across a perpendicular exhaust pipe does create a venturi vacuum effect onto the perpendicular pipe...

...pic is of the factory exhaust of a 997 GT3 cup car. Not really your traditional header that goes into a pretty much straight through 2in/2 merged out cup muffler.

I am not saying this is a good approach.
Old 01-13-2010, 09:29 AM
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