scubasteve22

i just got lond tube headers installed and an o/r h pipe and my light didnt come on for 2 days and then the service engine light came on. is that the CEL light or is there another one and there is really something wrong?

99mustanggt

Yes that is your cel, and no its not a problem(except for inspection). You dont have cats anymore so your O2's are reading that its got bad emissions, thats all.

8banger

Rear after cat o2's ,,simply read cat convertor efficinecy,,went the cats go bad or get weak,,the rear 0s pick up on this and turn the cel on....without cats on the car,,,its like having cats that need replaced...buy the rear mil elimators....and clear codes.....