Installed ultimate performance down pipes with high flow cats and secondaries. Keep getting P0038. I can clear the code but it comes back after 1-2 start ups. Any tips?
Downpipes or up pipes, same thing: over boost .
(I don't really know; just can't pass up a chance to have some fun at your expense; it'd be funny if I am right, don't you think so?).
IMR now offers tiny cats for your down stream O2 sensors on your primary down pipes! Your sensor detects a cat.... but you don't impede exhaust flow! These have been proven on the IMR shop car for the past six months. The have eliminated engine code P04020 associated with 02 Sensor malfunction...