had my Bbk headers, bbk catted xpipe and original 40 flows installed early December. Bout a week ago started throwing a code, p0430. From what i have read on this code is for the cats? What could be causing this? unless the cats are defective? less than 2k miles on the complete setup.

 

Some high flow cats will trip the CEL, as they are not as effective as OEM cats.

 

Didnt throw any codes on my car and i got magnaflow catted x. Catted midpipes pass inspection and emissions so it shouldnt be throwing any codes. Maybe a bad o2 sensor or something???

 

checked the sensors, checked for vac leaks, no oil burning off and had the cats checked out they're fine. even got the extended connection for the connection to the pipe since its further down on the 04's. i cant figure this out if my life depended on it lol.

 

Did it happen during a quick acceleration? I have heard of 02's throwing codes, can't remember why, during a quick accel, so maybe it is just something fluky like that and you can just erase it and forget it ever happened.

 

i was just cruisin on the interstate at around 75-80mph, light came on on hour 2 of my 6 hour drive, erased it and it came back so im clueless now.

 

I get that code along with two others (ill have to check what they are) about two times a tank. I have SLP x-pipe with high flows, so thats what im crediting it to. it runs fine, and randomly does it.