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The Stig · 01-18-2011, 09:10 PM

The stock cats are very restrictive. Replacing them will free up a lot if rwhp. Yes getting high flow cats will give you some gains, but not the same.

01-18-2011, 09:10 PM	#2
The Stig knows 2 facts about ducks Drives: ...and they're both wrong Join Date: Aug 2009 Location: The HMS Invincible Posts: 25,072 View My Garage	The stock cats are very restrictive. Replacing them will free up a lot if rwhp. Yes getting high flow cats will give you some gains, but not the same. __________________