UR high flow cat/downpipe install
Evolved Member
Joined: Sep 2009
Posts: 1,274
Likes: 3
From: Baltimore, MD
So reading this, I'm still not clear, when ordering this combo of both the DP and HFC, should both come with bungs for the 02 sensors or not? I havent been under the car to see if there is a sensor on the stock dp and another sensor on the stock cat. just wanna clear this up, also with the metal ur hfc, is there solid proof that it shows good gains over the stock cat or would it be better to get a milspec welded on for the extra cost?
Evolved Member
Joined: Sep 2009
Posts: 1,274
Likes: 3
From: Baltimore, MD
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