haha lol, i just installed my AEM CAI about 3 days ago and didn't get no damn check engine light or nothing. That is what happens when you DIY.
always better to go the diy route...haha unless you have no clue what you're doing of course
we did an SRI
(even easier than CAI
) on one of my buddy's car a couple of weeks ago..everything went super-smooth and no problems. used Injen
for the SRI