i recently install test headers and test pipes and at first the SES light dint turn on after like 50mi turned on so i did some research here and did the non fouler fix but the light keep turning on every 5 to 10 mi i have reset the ECU and everything after the headers and test pipes and the non fouler install plz if someone can help me this would be appreciated btw sorry for any bad spelling

 

the sensor might actually be bad?

 

extend the non-foulers out a little more

 

there are premade foulers that work well if you search for them im sure you will find em. also like Tollboothwilley said extend em out farther mine are almost to the point of touching the under body buy not too close to adjust for flex and such, but i have no problems with lights.

 

http://www.conceptzperformance.com/C...1199.250.13.98

my little Promotion for the lovely Concept Z!

makes it MUCH easier then the method i did. i went to napa and bought two smaller ones and drilled one threw and then screwed together and attached. I however wish i knew of those threw Concept Z ahead of time lol. Remember you need 2. so pay 32 and just plug and play. or spend about 10-18 for 4 smaller ones and get a 1/2" drill bit i think it was and just drill 2 threw tighten down nice and hard and screw in.


take your pick!

 

I had the same problem after insalling the FI race pipes on my 04.5. Switching to j bungs didn't work, new o2 sensors didn't work either. I ended up buying a cheap reader to clear stored codes, before the SEL tripped, everytime I turned the car off. The only thing that worked for a permanent fix was Uprev, all the cat codes were turned off and the SEL hasn't tripped since.