Originally Posted by The Cleaner
The short answer is NO. if they were you would have factory warranty still in play if you use one. We can debate this all day long but the fact remains if you use an aftermarket tune, even Dinan your warranty will be voided and your car flagged as tuned. If the tuners were 100% confident in the tune they would back you up with a warranty.
You might want to look into Dinan a little bit more - I respectfully disagree. PPK is BMW, so we will take them out of the equation.
So far I have gotten three engine /brake related repairs and service bulletins performed free of charge and under warranty by the dealer.
Yes, your car cannot be CPOed, and if something goes wrong with a Dinan flash or part, which is very rare, Dinan and BMW MIGHT have a little pissing match as to who foots the bill- but within the four-year period that you are under warranty, along with the Dinan's own factory matching warranty, you were free and clear sir.