Do I need O2 sensors?

bconnaway · #1 Fri, September 23rd, 2011, 08:07 PM

I'm installing OBX LT headers with resonators and a custom tune from PHP. My O2 sensors are seriously rusted into my old headers and I'm not sure if I'll be able to get them out. So, since I won't have cats and have the tune for that, do I need to install the old O2s on my new headers or can I just put a bolt in the hole and not have anything plugged into the O2 connecting wires?

ticopowell · #2 Fri, September 23rd, 2011, 11:50 PM

Yes you need at least 1 set of o2 sensors, they tell the computer if the truck is running lean or rich. the second set behind the cat is for emission reasons i think... it senses how efficient the cat is or something like that. your truck will need custom tunes to run without the second set of sensors, but like I said, you definitely need one set for the truck to run right.

bconnaway · #3 Sat, September 24th, 2011, 12:46 AM

Ok. So I guess I do need to really soak them in something like PB Blaster until enough rust comes loose and I can get them out.

ticopowell · #4 Sat, September 24th, 2011, 01:02 AM

I would imagine so... or buy new ones, but I couldn't tell ya how much those cost... :/

bconnaway · #5 Sat, September 24th, 2011, 02:06 AM

I didn't really want to buy new ones if I didn't have to since I won't have cats, they won't be doing much anymore.

ticopowell · #6 Sat, September 24th, 2011, 02:12 AM

well good luck either way, and you might want to have bill write a tune before you remove the 2nd set or the truck might not run right... just a thought...