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Exhaust ses light

G

GMPUNK

New member
I had bought and installed a Random technologly downpipe/cat/u-bend delete about 3 weeks ago, and today I got ses light" low efficiency" code. I don't think it's possible for the part to be defective. It's weird that it would come on 3 weeks later. did the o2 just decide to crap out? How do I solve this problem?
 


The high flow cats have been know to trip the rear 02 sensor code for a malfunctioning cat. Is that the code you are talking about?
 


Hmm I can not find an 02 sim anywhere either. I bought one during the summer for my car, but now I see them no where.
 
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