Yes he uses OEM coils unless you send him a aftermarket one and upgrades the wire. If the coils are failing and not the wires, I'm sure there were other issue with the electronicsi thought he used oem coils and put better wires on them, i never had any issue with my jss coil that i sold you, is it still working? I would like to see all the skis that had the problems with the coils and look at their own workmanship. i personally ran the jss coil i sold you when i was at daytona and had no problems. sometimes its the part but other times its the installer,