Originally Posted by Will@PRS
Our BMW dealer in town does not like to deal with Dinan cars so it wouldn't matter. With the Hex flash tool like VF Engineering's you can always flash the car back to stock at any time so your warranty won't be affected.
True, you can flash back to stock, but BMW is going to be able to see how many times the car was flashed. I would think that warranty is going to be voided- correct me if I'm wrong.
There was a case of a 911 where warranty was denied because the car was previously flashed. The ECU's are probably different than BMW's, but Porsche was able to see that it was previously tuned even though it had the stock flash on it.