I need some help, my check engine light came on randomly the other day

Here is my setup:
2003 s2000; 43,000
Comptech supercahrger w/ aftercooler
Invidia testpipe
Invidia catback exhaust

Just wanna know wat u guys think the problem might b, it came on two days after I installed the testpipe

 

Get a code 1st.

 

We don't need a code. We should just guess.

 

Shouldnt people learn by now not to post up a cel thread if they dont have the code.

 

buy a scanner

 

I'm going to guess its the test pipe telling you the 02 sensor connected to it just started complaining.

 

x2

Do you have two anti-foulers stacked, or the CEL fix?

Get a code to be sure.

 

Buy a spark plug gapper and screw your O2 sensor into it that way it gaps your sensor out more. If I can remember, It's a 14mm gapper. You can get it at Auto Zone for a few bucks. Then it wont throw the check engine light anymore. You'll have to bore out the hole on the end of it so your sensor will fit. I had to do that to mine after I installed my test pipe. It's just your O2 sensor reading more flow but by gapping it, you wont have that problem anymore.

 

Yeah its likely the test pipe, get another extended bung and double them up to pull the 02 sensor out of the exhaust path far enough.

 

thanks s2k freak I'll give that a try