and 3) No one has put higher then 3:91 in the M3 so none of us can answer that question.. but it will go from 2 shifts to 60 to 3 shifts to 60.. so while it may make the lower gears a little more useable as far as speed.. it is going to make your 0-60 slower.
-Alex Levy
03.5 Alpine White M3 (THAT DOES NOT FSCKING SHIFT!!!!)
Cinnamon Leather / Aluminum Trim
SMG / Nav / Xenons / XM
DiXiS Spirit Ti Exhaust