Electrical parts are tested prior to buy and if returned, all units might be inspected for burnt factors, Actual physical harm, and water hurt. Returns might be processed in the order obtained and might have a better dealing with time than purchase processing. Flash tunes actually re-program the DME. Even https://bmwecuisn01233.articlesblogger.com/53043138/5-simple-statements-about-gm-ecu-reprogramming-explained