Quote:
Originally Posted by XiZBiT
Just installed the BMS JB4 Stage 1 in my '14 550ix MSport. Went from. 4.6 to a 3.5 0-60. Couldn't be more happy with such an inexpensive tune.
|
3.5 exactly? Seems a little quick coming from just a JB4. Seems fishy but could be true. After all the m5 does do 0-60 in 3.9 (or 3.7 depending on who does the auto review).