|FlashScan V2 is a standalone OBDII vehicle scan tool and data logger plus a pass through device that connects a laptop computer to a vehicle for scanning, data logging and re-programming onboard controllers. This product contains 2 VIN licenses. You can tune any 2 engine controllers and any 2 transmission controllers with those 2 VIN licenses. To tune more controllers than that, you must purchase additional VIN licenses or unlimited stream licenses. Contact us for more details.