[jfmillr]

Hey Adam,
Actually if you have your chip redone properly the dealer has no way of knowing your chip has been modified. When your chip is retuned they remove the chip that holds your fuel maps from the ECU. They make the modifications to the file and use an EPROM to flash the new program to your chip. Then it is resodered onto the ECU mainboard. But yes it is a fairly expensive process if done properly.