[BMthusiast]

Comparing S55 and S58 torque delivery w/ bm3:

S55 bm3 Stage 1 91 octane ver 9.1-

420 tq @2900
440 tq @3100
525 tq @3600
544 tq @4200 MAX
510 tq @4800
475 tq @5600
440 tq @6200
375 tq @6800

S58 bm3 Stage 1 93 octane BETA-

280 tq @2900
350 tq @3100
485 tq @3600
532 tq @4230 MAX
520 tq @4800
480 tq @5600
450 tq @6200
430 tq @6800

I'm guessing that the dyno for the X3 M pulls is showing mild low-end torque results because of the tuner being on the safe side during beta testing, maybe boost reducing 1st and 2nd gears. Nice mid-range and top-end results though!