Xhorse VVDI2 Basic Module is the cheapest VVDI2, only Support basic function(VK-01) for PSA TAG(PS-01) and J2534 Passthru(VJ-01), can buy the other authorizations later, such as VAG 4th,5th IMMO and BMW OBD,BMW CAS4+ authorization, BMW FEM, OBD48, 96Bit 48, MQB.