falling apart?
I looked all over and up under the car and cant find anything missing or unhooked so today I hooked it up to my buddys Actron scanner and it said it was the MAF and a knock sensor..
The car still runs fine and its a 98 A4 btw...
Im sorta new at all this so Im scratching my head trying to figure out what it could be that would throw both of those codes.
any ideas?

