OBD2 Port Plug. "DO NOT FLASH" warning to service techinician
It's a good idea to de-program your "tuned" vehicle to stock before taken in for service. In case you forget, here is a last ditch effort to keep the service technician from "flashing" your computer with the latest dealer calibration software, which will wipe out any aftermarket tune you have uploaded to your vehicle.
Save many hours of hassles and phone calls to your tuner company begging them to unlock it so you can re-tune your vehicle; or worse having to buy a new tuner all together.
Use with all aftermarket tuners which tune through the OBDII port.