EFILive FlashScan V2 with GM Diesel & Gas Tuning Option EFI Live 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. EFI Live FlashScan V2 connects a laptop computer to a vehicle allowing you to diagnose faults, record data and tune your vehicle. EFI Live FlashScan V2 can simultaneously connect to other peripherals, such as wide band O2 controllers, thermocouple temperature sensors, analogue sensors and switches. GM Gas Coverage: http://tunertools.com/EFILive-GM-Gas.asp GM Diesel Coverage: http://tunertools.com/EFILive-GM-Diesel.asp