so i installed an air intake on my 97 2.8 A4, but i did the mistake of not tightening all the clamps and when i turned on the car on the intake was leaking and almost immediately the check engine light turned on, i tightened the clamps and the car is running fine now, but the light still on...do i have to take it to a dealer to have it fixed?

 

it needs a diagnostic reset tool, other garages use them not just Audi

 

Try disconnecting both battery cables and touching them together.

 

have you tried to just wait it out? the cel's occasionly turn off.