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p0420 code on

F

fst

New member
Seems i got a drop in converter efficiency in B1S2. I do have a magnaflow hi-fo cat installed a few months back when i had the pacesetter headers installed but just recently this DTC came on. i currently have it as No-Reporting in the PowrTuner, but was wondering if its a cause of concern, seeing that its the Post-Cat and not the Pre-Cat.
 


fst said:
Seems i got a drop in converter efficiency in B1S2. I do have a magnaflow hi-fo cat installed a few months back when i had the pacesetter headers installed but just recently this DTC came on. i currently have it as No-Reporting in the PowrTuner, but was wondering if its a cause of concern, seeing that its the Post-Cat and not the Pre-Cat.
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Not to worry. Setting that code to no reporting is fine, when you have a hi-flow cat.
 
Yeah, I wouldn't worry about it. I have a magnaflow high flow cat and never got this code. But if I did, I wouldn't worry. Many people totally get rid of their after cat O2 since it doesn't do a thing but put up those stupid lights from time to time. :)
 
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