[detroitboy]

Do you honestly blame the dealer for wanting to see if the problem occurs with the factory air intake before they proceed further with trying to diagnose the problem with aftermarket parts on the car?

Any mechanic who is worth his weight in salt would want to start at "ground zero" with the problem. That means trying to identify the problem using the factory parts and fix it using factory parts before proceeding to using aftermarket parts and determining if the problem continues or not.

Just because an aftermarket part worked on your previous vehicles does not guarantee that it will work without a problem on a new car. Its doubtful that the K & N is the issue....but stranger things have happened in this new world of computerized cars. Give the dealer a chance before you slam him so bad for trying to give you an accurate diagnosis of the problem.