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Old 04-04-2018, 05:44 PM   #10
PaulE
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Join Date: Jan 2014
Location: New Jersey
Posts: 1,631
Quote:
Originally Posted by NewArt View Post
Paule, just stock exhaust save for the secondary cat deletes.
Looking at pictures of stock 986 S exhaust manifolds, I would think a decent set of headers would give you a nice HP gain, from both the freer flowing exhaust and the scavenging effect, especially since you've already helped the intake side. But if you need cats they are pricey!
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