[528imsport]

Originally Posted by RC3

pingu, any comment on this thread?

http://www.e90post.com/forums/showthread.php?t=461127

Never tried SD before but seems like the E90 bros recommend BMS more.

SB is to cut off the lag of the throttle response as for the BMS it is for extra power.
I was planning to get the BMS too, alot of ppl say it is good.
maybe you can try out my car 1st before you buy the SB or BMS