My rig is mis firing (and backfiring) and i took it to the national chain repair shop and they wanted $75 for the code reading then another 70 for the reprogramming of timing. i told them i would think about it.
I ALSO found out i have a hole in the pipe before the o2 sensor and cat convertor. i knew there was a hole before i was getting a lean fuel code.
should i replace the ENTIRE pipe of just patch it. the converter is good.
they said the o2 sensor SHOULD be replaced but they cant say if its bad right now because of the hole.
what should i do.