How can I delete rear O2 sensors
Ok so I got a shop near me to make an X-pipe for my 98 V6 and they put the rear O2 sensors on the bottom/behind of the cats so I have a very big issue with them breaking from scraping the ground. I was wondering how I could delete the rear O2 sensors so that I can just take them out and just cap off the holes so i can run just my front O2. I'm growing tired of the CEL being on. Also the rear O2 just tell the PCM if the cats r working right? They don't effect gas mileage/performance do they?
2004 DSG Mach 1: K&N FIPK, x-pipe with SLP High-Flow cats, Flowmaster super 40s, MM C/C plates, 4.10 gears (auto)