K well heres the story.....I bought a Thermal Research cat-back and decided to do the install myself. Pretty simple except I couldnt get the bolts off near the cat. So I took it to a local muffler shop and they heated the bolts and got the pipe off for me. So I had to drive home (10 mins) with just a cat on ( noisy as hell) well my check engine light came on as soon as I left the shop. At the time I didnt really think about because I thought well there is no pipe on so that must be the reason. Get back home and put the thermal on ( I love this exhaust) start her up and the check engine light is still on..Im like WTF

So I take it back up to the muffler shop and they say my 02 sensor is shot, and it will be like 370.00 to replace

That seems a little high, hell that seems a lot high, so I checked with my local pepboys and they said just for the sensor it will be 330.00

I dont have that type of money for a damn sensor especially after buying my exhaust. I need some help of where to buy a cheap sensor for a 96 si h23. Also it just seems coincidental that the sensor went out at the same time they took that pipe off for me. Sorry for being so long but any help would be greatly appreciated..