I would like to have some ideas on this. I have a volkswagen passat wagon 1.8l chipped. It has an extended warranty on the car that covers almost everything bumper to bumper. Especially electronics related. I am about to go in to service to track down a fault which may be the N75 valve or The DV (what ever that is). If this car were stock, I would be covered. However because the car is chipped, do you think this would be grounds for denial? Last thing I want is to give the insurance company an excuse to cancel my policy since I have already gotten my money back in dealing with this car. If I were to submit a claim, could chipping the car be used as an excuse to deny payment because it was the chipping that blew up the devices in the first place? I dont know how much a new DV cost but I would like to have them pay the bill if I can. I welcome your thoughts on this subject. Elliot