Catalyst Below Efficiency Bank 1.
Dealer just replaced the 2nd O2 sensor.
Stock Manifold.
Only Mods-CAI, Megan Drift Spec exhaust+s-pipe
Currently i am running the Anti-fouler trick to get the CEL to go away.

Thoughts?

 

maybe cat in the header is done for??

 

yup it might be the cat is really done.. but hey you have an antifouler on a stock header and still doesnt work.. i would reset the ecu and see if it would come back

 

No the anti-fouler trick worked, which makes me think it is the cat...oh well, good excuse to get a header

 

the cat is done. common.