Check out www.Diffsonline.com , the website explains the different setups and gives you a chart of gearing VS speed ..... Dan's builds are considered some of the best in the racing world....fm_illuminatus said:What kind of acceleration gains could I get by modding my rear diff? What if I put in a 3.73 or a 4.10? How much would this cost me?
I just got talked into test driving an '06 beautiful black/black M3 (with the competition package, too) at crevier BMW and I want it. Obviously, I can't afford a 62K car as a 21 year old student (although the salesperson swore I could :tsk: ) but I was wondering if I could get that "seat of the pants" feeling of shear acceleration out of my 540i with a new diff...?
Also, I don't really care about fuel economy or top end (I chicken out over 140ish anyhow) so, is a 3.73 or 4.10 LSD (or even open) right for me? Where could I get one? Thoughts people, thanks!