techieman33
Explorer Addict
- Joined
- January 29, 2005
- Messages
- 7,858
- Reaction score
- 11
- City, State
- Topeka, KS
- Year, Model & Trim Level
- 00 V8 Mountaineer
Why do you still need 4 o2 sensors? You won't have the factory computer looking for the rear pair, and from what I've seen they're mostly there to monitor catalytic converter function. Jah81592 usually turns them off in his tunes. Mine haven't been used in well over a year now with no ill effects.