Went to the parts store today to possibly order a cat. I got stumped though when he asked me if mine had 1 sensor or 2. Also I'm assuming I'd use my original Sensor since he said they cost about 500 bucks if i wanted one.

Anyone who's done a cat switch to high flow did you buy the 2 sensor or 1 sensor cat?

 

What model do you have? Things will get frustrating with a DX/LX/CX, but with an Si/EX you are good. You will need a cat with just one bung, you have 2 sensors, one in the manifold and one in the cat. Even if you got the 2 sensor cat, just plug one of the bungs and if the cat is doing it's job, you're good.

 

I bought a magnaflow direct fit(bolt on) high flow cat for $140 and it used one sensor just like stock. And no they don't cost $500, I've seen them for $175-200 online.

Be sure to get an O2 sensor socket, I think they're around $10-$15

 

open ended socket has always worked for me....

 

Yeah, get one with one sensor. Your primary o2 sensor should be in about the middle of the manifold itself. And personally, I've always just used an open-ended wrench/a crescent wrench for my sensors (if you use an open-ended wrench, it's something big... like 21mm maybe?).

 

Thanks for the help guys it's exactly what I needed know.