Quote:
Originally Posted by GrahamSP
Great DIY, will this cause an O2 sensor error? I wouldn't think so since the O2 sensors are upstream of the secondary cats, but just want to make sure. Thanks!
|
No, no CEL on a N54. The secondary cats are just THAT, second in line... so there are no O2 sensors for them. Only for the main cats - which are still there an functional.