This Bosch MasterTech VCI unit has been the Best Investment I've made. I have had this unit for about a decade now, Since I 1st bought it at the beginning support with OEM's was a little poor, but as years passed it just got better. I also still have a outdated MasterTech MTS5200 Scan tool so with the included software that I've already had been familiar with its been awesome scan tool for older vehicles and a new OE J-Flash tool. And now with GM GDS2 and Tech2Win many OEM software support it's paid for it self many timer over. I'm just sad to say Too bad now Bosch has discontinued support for it and can no longer update any of its software. It's still works just as an J-Flash tool only, I hope a similar replacement for it comes out like the MDI2 because after all the Bosch MasterTech VCI was an identical GM MDI 1st generation.