I have a 2003 Volkswagen Jetta and i have a injen intake system installed. Since it has been installed the check engine light is on. I tried to reset the computer but it always comes back on. Does anyone know what i need to do to eliminate this problem?

 

i would have your check engine light diagnosed. I had the same problem, took it to autozone and it showed that my maf senor was out. i changed it and the problem is gone.

 

I agree. See what the codes say, go from there.

 

it could be your oxygen sensor could be reciving to much air other words "lean"