They don't run a different chip or tune at all.
There are varied options fitted to BT-1's. I have a VR on and has LSD, FE2, ABS, Calais interior light (has reading lamps), light above the dash, 2km/h increments on the speedo, sump and trans protector plates and ground out gear selector to go back to second with out lifting the lever.
AirStrike :air: