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Old 11-26-2014, 09:47 AM   #10
steved0x
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Join Date: Dec 2012
Location: FL
Posts: 4,143
Quote:
Originally Posted by The Radium King View Post
steve has a good point - most put the bypass pipes on because changing the headers is a pain given that they have cats on them. you have the opportunity to put headers on easy. the engine benefits from having the obstruction (cats) as far downstream as possible.

otherwise, if you can't reflash, try just disconnecting the second set of sensors and hang them under the car - see if you get a cel. some have found that this works. if not, then a second set of bungs is required. you can get expensive sensor foolers (like these:

FVD Brombacher Online Shop - FVD111LAMVER - Oxygen Sensor Extension - EXHAUST → Tuning → Catalytics

or make your own out of a set of spark plug spacers.
A place called Big Daddy's garage has them as well, $14.95 for the spacer and around $50 for one that has a mini cat built in.

O2 Simulator, mini catalytic Converter cel fix
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