This thread is recent enough that I don't mind piling on. I just got my first 911, an '88 coupe. It was originally a CA car, but has since been to WA, OR, GA, and now back to CA. I took the car for a smog test today in preparation for registering it, but it failed with high NO.
Car has 121k miles. Runs great, and the PPI I had done found no compression or leakage issues. It has a stock, presumably original, cat. It also has a Steve Wong chip.
I was hoping that I would find the brown wire disconnected, but unfortunately not. Any other suggestions for things I should check? I'm new to this, but I'm handy with cars and have plenty of tools available. Here's my report.
