I just bought a new fujita cai and a megan header i installed them 2 days ago and driven roughly a hundred miles on them since then and this morning my chk engine light is on can anyone tell me y?? i was thinking cuz i did away with the catalyc converter but i mean 2 days later?... i just dont wanna harm my tc and that damn engine light is annoying as hell.

 

you're posting in the wrong section the CEL has nothing to do with your Cai it's because your car doesnt have it's cat anymore i'm surprised it stayed off for 2 days usually its immediatly. if you want it to go away you need to install an antifouler on your 2nd o2 sensor and it will reslove.

also before you come on to a forum you should probably give us all the info i.e. what code you're throwing if you had gone to a local auto store they could read the code and more than likley the codes explaine themselves.

one last thing had you used the search function you would have solved this on your own.

 

sheesh well my computer is retarded i did click on tc owners it threw me here sorry for the inconvenience mann but thanks for the help i havent been on here but a few times so i cant navigate through here all that great but ya thanks....

 

Fujita intakes are infamous for throwing a CEL, but the header without a cat and without the antifouler is a guarantee CEL.. but yeah we wont know till we get what kind of code it is throwing

 

I hear you ima try to get those codes in a few hours then I'll just take it from there thanks mann

 

My best bet would be that the header is making the CEL come on due to not having the antifouler!

You can pull your battery & wait about 15 minutes then put your batter cables back on. Start your engine let it idle for 5-20 minutes & the CEL should go away if not then it is the HEADER!

 

at least he said header instead of headers? lol it's improvement!