M103 300CE Exhaust dilution
 

Finally put a little into my CE . I need an exhaust, seems the original is still on there. Was wondering what cat-back system I could go with. I just replaced the O2 sensor and the plugs are good. Changed the oil and filter when I did the O2. Now the car is testing for the CA smog test. Had a check done and it's running really clean but it did read too much oxygen. Turns out the transition pipe on back muffler has a hole in it. I was wondering if there is a metal type temporary fix for this or not. Also, what are good choices for a cat-back system. I believe the cat is OK. But wont know until the dilution reading is cleared.

Regards,
Jason