LS1LT1 Forum banner
1 - 2 of 2 Posts

·
Founder
Joined
·
7,472 Posts
IMO the cats are not terribly restricive. Basic exhaust theory says to make the most power deal with the restriction closest to the motor first.

That would actually dictate doing headers and ditching the manifolds FIRST before even touching the rest of the exhaust, but most of us don't do it that way.

On an LS1 I'd say the Y is the most restrictive just because of the crushed section, then the manifolds, then cats, then catback.
 
1 - 2 of 2 Posts
This is an older thread, you may not receive a response, and could be reviving an old thread. Please consider creating a new thread.
Top