Interesting. I have the cable already, so it would be the control box and the extra wiring that goes near the control box (4 wires I think.)
Originally Posted by bighungry618
Just FYI, those that have the stage1 tune only need to buy the “upgrade” kit for the stage2. The kit is $150 plus a $20.00 (American) core charge that is refunded when you return the S1 control box.
If one would like to upgrade or buy the stage 2 as a whole, Terry from Burger recommends that you also get the BSM USB cable.
As quoted from an email from him: “The USB cable is a good idea as we expect lots of future software updates for S2.”
I have placed my order today and will update the difference between the two stages when there is sufficient seat time to evaluate between the tunes.
2012 535xi M-Sport, Carbon Black, Cinnamon-Alum Hex, Exec Pack, Tech Pack, HUD, Damper Control, BMW Apps, Heated Rear Seats