im pretty sure its o2 sensors because i dont have a cat anymore and the front o2 extension didnt fit into the sensor so it had to be jammed in.Also whoever got Pacesetters i took off EGR but the vacuum hose that was connected to it is still suking ait what do i do with it.Cut it plug it?One last question on one of the test runs the car made a fart sound like a civic why did that happen? It was pretty embaracing.Ill post pics and videos later on.

vac leak, no cat, hacked together o2 wiring harnesses and you seem suprised your check engine light is on? I'm surprised the car even runs....

either plug the end of the vacuum hose or follow it to the source and cap it off there, doesn't matter which way.

Scan the codes and see what you are getting, you'll more than likely have a few.

You need some way to scan your o2 voltages to see if your harness is working correctly.

no no im not surprised lol.I just want to see if it happned to everyone.o2 is the one im really worried about.How can i check if its connected good.I did a tune up and my MPG is still under 10

You would need a scanner program or Aeroforce to read the o2 voltages that the PCM is receiving.

Damn thats going to be a big problem.I dont know anybody who got it.I knew those headers are going to come with a huge headache.Ill go to autozone tonight to get it scanned then ill go from there.

Your o2 sensor harness may be fine but I wouldn't chance it. They are very important to your fueling.

I dont know what to do now.

is there a New York grand prix club? someone there may have a tuner and can check it out for you.

Otherwise you'll need to purchase an Aeroforce.

there was one but i dont know anybody there and their wesbite havent been updated for years

is ti expensive?Can a regular shop do anything?

i went on there website which do i need.I never had to deal with Aeroforce

A regular shop probably not.

A dealership most likely has something that can scan it, it just reads from your OBD port.

An aeroforce is like $200 I believe.

its the interceptor one right?$239

Yep, that's the one.

Try and find a used one on CGP.

already checked no luck lol