So I'm going with racingline HFC's. I got the stock cats out. Oxygen sensor from te front cats dont wanna come off. I pretty much tryed everything and have up. if anyone have a extra one and want to sell it to me please know. Cheapest I found was 122.00 on eBay dam it's expensive

Thanks,
Deep

You should take it to a shop and let them use a impact gun that should get it out thats how I got mine out when I put my HFPC on

you cant use impact gun on them. I have the impact gun but the wire gets in the way. Im gonna try heating it up

If you have already, disregard the following..HEAT the sh*t out of the bung around the sensor till the bung is glowing red around... it will free itself, unless the 7/8, 22mm hex is stripped already.... then you are SOL.
I would buy a new sensor. Getting a used sensor is like playing russian roulette. Someone at Fedex will drop that box and possibly bye, bye sensor....plus its used, who knows how it was working before you got it? If you are talking about the rear sensor as I assume here. You can use a 4 wire universal. I can help you wire it up if you need to...

-Dan

should of just went to autozone a bought the o2 socket

Shit I never knew they will have a socket for this becuase for the rear cat I came off easy I just gotta re connect the wires now and wrap wire with some high material.

Thank you guy it really saved me 100 bucks

If you miswire the heater wires (white) you will get a CEL....you now have a 50/50 chance. lol. If you do get a CEL for the heaters, just swap the two white wires.
-Dan

i made different cuts on the two white wire once longer then the other one. so i knw.

Nice.....! your stakes just went up 50% up^