Jegor
New member
I have an 05 Impreza 1.6 failed on emissions first time through, I at the time had an exhaust leak so I thought that may have been the issue but after getting a new cat back done up the emissions are still very high. I have an aftermarket intake which could be throwing it off but not to such a high degree. I'm thinking map sensor next Anyone have any other ideas?
P. S I have replaced the pre cat o2 sensor 2 months back
P. S I have replaced the pre cat o2 sensor 2 months back