Quote:
Originally Posted by Gonzo719
Hi I recently installed an AWE Tuning track edition catback with AWE link pipes that replace the secondary cats I’ve put about 500 miles on the system.
I got a CEL hooked up an OBD2 reader the code is P0420 catalyst system efficiency below threshold bank 1. Did some research and most say O2 sensor looking at the info from the reader both banks 1 and 2 #1 O2 sensors have no voltage while both banks #2 sensors have voltage.
Was wondering if others have experienced this with the O2 sensors not having voltage after installing a new exhaust system any info would be greatly appreciated Thank You
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Mine did the same thing, when I installed my Stainless Works Cat Back. I got it tuned and no more issues.
If the system, you installed, eliminates the secondary cats, then yes you will need a tune.