[MN2///M]

Max Well, I think you could plug the following numbers for HP/Torque based off the M3/4 and Club Sport versions:
Base M3/M4 is 425 HP and 410 lb-ft of torque
Club Sport version is 460 HP and 442 lb-ft of torque

I still stick by my assertion that the X3 M will be slightly lighter than the M40i. The X5 M is heavier in part because it utilizes a larger motor. I think BMW will shave some weight through some lighter parts, but I believe this will really be dependent upon the price point they decide to hit.