Quote:
Originally Posted by MichaelWave
The middle portion you see right there is the res with a mid cat built-in, don't worry that's not your actual main cat. that whole section is cut off on mine and replace with a pipe  no engine code either after cut. |
Interesting ! Do you have a picture ? The big piece shown on the picture is Gas particulate filter. I was of the opinion that OPF delete will throw engine code. There is no sensor on it but mechanics explained me that sensors are on the main cat and are measuring exhaust gas flow and back pressure. OPF is affecting those values. That's why my straight pipe starts only after the OPF. With your help my OPF can go out hopefully
