i have added an invidia dp to go with my greddy cat back now the check engine light comes on along with the curse control but it comes on and off from time to time i get my ap next month will this stop after i install it.

....oh boy....

Um.......yeah.....But until then, search for "spark Plug anti foulers".....There's like five thousand threads on this topic.

Please refer to this thread, the part about check engine lights-
http://forums.nasioc.com/forums/showthread.php?t=718033
And, wrong forum.