Anyone have any idea why this code would pop if all I have is a catted ZZP (magnaflow cat) and a K & N drop in? I looked over the sticky regarding CEL codes and didn't get much clarification on this code for the LNF. Anyone else have this issue and wha did you do to remedy? Your help is greatly appreciated. Thanks.

 

i have the same code...trying to meet up with BYT to clear it

 

post cat low effiency code bro, your downpipe is doing it, a high flow cat will still throw codes

 

Thanks. I found some info on it just by searching the code #. I figured it was from the downpipe but just want to make sure my cars not actually running lean and is safe. Better safe than sorry. I messages Matt with ZZP for his input as well so hopefully all is good.