Engine Performance
Hi all,
My '07 FJ has a cat delete and fully-aftermarket exhaust (came with car when I bought it, 2nd owner).
Everything worked great for over a year until I went off-roading and really banged up the underbody, and damaged the O2 sim (URD Rear O2 Simulator, 1GR-FE 4.0L V6 Dual Channel). Started...