FOR SALE: BMS Stage 1 (Harness A)
$250 shipped
Had it on my 2011 550i. Great power (40whp) and I was able to take it off in minutes for trips to the dealer. Much less wiring than the jb4 beta, easy install.
Includes BMS CAN tool which allows to clear CEL if you plan on running catless downpipes as well as increase boost if desired .
Please look at the pic and confirm you have the correct matching harness