well i am so happy witht he results. My car didnt throw a code for bad o2's but since i recently bought the car i didnt know the last time they were changed.

I had some real problems with the passenger side. Me and my roomate put it up on a lift here on base and tried to get to them from under the car. Even with my skinny arms i couldt get enough pressure on the ratchet to break it loose.
So we put it back on the ground and tried it from the top. That did the trick, with a ton of extentions and swivels we got it out.

The driver side o2 was a breeze, we put the car back in the air and used a 1 inch wrench on the o2 socket. It came out without a problem.

As far as a preformance increase, i was shocked. I took it out for a test drive, and i could definatly feel a differnce. Before the swap i would floor it in 2nd and it would go, but not as hard as you would expect. When i floored it this time i was thrown back in my seat, a sensation that i normally dont feel. I cant wait to see if i get some better gas mileage. I was having problems with it running rich as hell on the dyno, like 10:1 with the NX wet kit. But on the base line runs i was at like 11.5:1 to 12:1.

I guess thats all....but would an o2 swap really make that big of a differance to a car that wasnt throwing a code?

 

Tell me how much your gas mileage increased when you do a few test runs, send me a pm or something. I am thinking about changing mine but my car doesnt throw errors either.

 

im prolly gonna change mine afew weeks after my header install

 

Ive heard ppl say they went from not being able to spin the tires in first off a stomp, to a all out roasting the tires with new O2's..cant wait to put my new Ac Delco's in, they are in the garage awating time for me to install them