Ok, when I did my Exploder swap everything went ok, but dumb me I forgot to plug the front Pass O2 sensor and I fried it on my way to get a new exhaust done. Well, a couple of months passed and I decided to "fix" the problem. So I bought the harness from another cougar and put it on right, well, after I hooked up everything, I fired it up let it run for a while and then I reset the EEC. Well, after that, it misfired REALLY badly, it really sucked because I need to floor it for the car to get some power, on first, it's really slow, but after I floor it, it's normal. Of course I had my engine light on because of the O2 but after the reset it went off. If I take the O2 off, I know it will work way better than when I had the O2 on. How can I fix the problem? I dont a chip for the new engine, Im running my stock EEC.