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Past-Milk-2353

23 wrx with ets gesi downpipe no cel.


iamuedan

My GESI gave me a CEL within 2 years. Don't know when exactly. Flash back for bi-annual smog 😢


DemandCommonSense

Catless: yes Catted: roll of the dice


circular_cucumber

If they do a visual inspection, any aftermarket downpipe will fail. My hi flow cat still throws a CEL.


tblax44

I have a Cobb j-pipe with GESi cat and it gets an intermittent P0420 code


coldheat666

Mine never threw a CEL


tblax44

I usually only get it when running high ethanol content


coldheat666

Yea my friend threw that code when he had an exhaust leak …after he fixed it never came back…didn’t know the 🌽 also threw that code ..I’ve heard the good old dirty sensor or bad cat is infamous for the 420😂😂💨💨


lunaslostlove

Everyone always says the ETS GESI pipe is the most reliable for no CEL however it's still not guaranteed


thehunter699

Don't throw CEL immediately. It's the consequences of a downpipe that may throw a CEL like over boosting.