just install a fuel ratio chip in my car . i had just installed a cai the day before my car was driving fine then today 2 day later the check engine light came on . any insights for cause of problem or ways 2 correct

 

no one will be able to answer your question unless you go check the CEL and tell us which code it is throwing

 

how or what do use 2 check it

 

http://www.c-speedracing.com/faq/03.php

 

when you pop off the kick plate by your ECU there is this little wire that looks like something plugs into it, well you put your keys in and click the key over once, then you use a paper clip to short the thing that looks like something plugs into it then once you do that you turn the key one click more and then you count how many times it blinks

long blink = 10
short blink = 1
long pause then more blinks = a whole diff code

EDIT: damn, nick beat me to it

 

thanks i got it fixed