Ok, this is not a hard install at all, but when dealing with the o2 sensors, you want to be safe!
Step 1: Drive onto ramps or jack up front end of car
Step 2: Find the Rear o2 sensor on the downpipe
Step 3: Remove o2 sensor from Downpipe (use PB blaster if it does not budge). Loosen it slightly, then spray with pb blaster again and retighten. Wait 5min, and unscrew completely.
*note- I used an o2 socket, but you can use an open-end wrench (7/8")
Step 4: apply anti seize to o2 threads & ATP bolt threads or it will not screw in smoothly!
Step 5: screw o2 sensor into ATP socket, and tighten with o2 socket (a little past hand tight)
Step 6: Screw ATP bolt into downpipe, with one washer on each side of unit. Tighten with 22mm, a bi past hand tight
Step 1: Drive onto ramps or jack up front end of car
Step 2: Find the Rear o2 sensor on the downpipe
Step 3: Remove o2 sensor from Downpipe (use PB blaster if it does not budge). Loosen it slightly, then spray with pb blaster again and retighten. Wait 5min, and unscrew completely.
*note- I used an o2 socket, but you can use an open-end wrench (7/8")
Step 4: apply anti seize to o2 threads & ATP bolt threads or it will not screw in smoothly!
Step 5: screw o2 sensor into ATP socket, and tighten with o2 socket (a little past hand tight)
Step 6: Screw ATP bolt into downpipe, with one washer on each side of unit. Tighten with 22mm, a bi past hand tight
