Ok so the other day i put in a k&n drop in air filter and the next day my check engine light was on... Well my buddy has a thing to hook up to the car and it tells you why the light is on... It said evap small leak detected... What does that meen?? we cleared the code and so far no light.. Anybody know why

 

You may have pulled out one of the vaccum lines when you pulled out the intake box. Go back and check all the tubes running from the intake box runner to make sure none of them have pulled out or come loose.

 

or gas cap not tight.

beers