ALIENTECH KESS V2 MASTER With Truck OBD Protocol pack. KESS Suite, the software supplied with the OBD Programmer, the truck you want to tune. KESSv2 corrects the Checksum, checks and removes errors in the ECU, tests battery tension, perceives whether there is the risk of losing injector codes and saves them, and only then starts the writing.. Approved Alientech master file writing training is available on request, this Master Kess comes with set up support and installation help. This Alientech Kess V2 Master tuning tool is provided with Bike, Car and Vans protocols ready to use and a 12month Alientech licence and upgrades. SKU: SKU18476112 Categories: Alientech Professional Tuning.