Got the ZZP pipe installed and all today. Fit well, but old bolts and such were rusty, so the guy that installed it had some problems with them. All in all, it worked out. The stock O2 Sensor was shot, rusted and threads died when having to remove it. Ordered a new O2 Sensor and will get that in tomorrow, install it on Friday. Right now it's running with a plug in it. Works great, fixed all the acceleration problems and such I was having. Once the new O2 Sensor is install, I'lll have the original error codes reset and then I'll see what happens.
Question, would there be any advantage of replacing the upstream O2 sensor? I figured if I'm replacing the downstream sensor and getting a new cat that maybe now would be the time to replace the upstream as well.
