Good questions cosmic for sure.....I dont have the answers But I honetly dont feel like im going any faster when i turned dsc off. but thats my point of view in my car. Another thing is...You already got gobs of power to the front wheels as it is...more power in 1st and 2nd I think will result in tire spins unless you got some super sticky tires-slicks...A relatively lightweight platform with fwd and that much torque doesnt do it any good if your tires are spinning. Why mazda didnt make the 2010 ms3 awd OR use Ford's revoknuckle fwd system they use in the new focus rs racer in europe is beyond me..other than ofcourse costs....But you could go test it out on your own on some closed off roads and see if theres a difference.