03-05-2009, 03:29 PM
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Member
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Join Date: Apr 2006
Location: USA
Posts: 1,399
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Check out this webpage for more info
Quote:
"At nearly the same time as the F355 F1, BMW introduced a similar manual-based semi-automatic into M3. Basically it uses high-pressure hydraulic actuator to shift gear just like Ferrari's system, but uses conventional shift lever. Manual shifting is the same as the sequential box uses in BTCC racers: just a push / pull action. A button located near the shifter panel is used to change to automatic mode.
M-Sequential (or SMG)-equipped M3 E36 had slight performance loss over its manual brother. More delay could be felt than Ferrari's system too. However, BMW claimed in real world like Nurburgring race track, it actually out-performed the manual car because it enables the driver to concentrate more on steering, throttle and brakes.
In E46 M3, the SMG was developed into SMG II, offering even quicker shift and 11 different modes - 5 automatic modes and 6 manual modes with different speed versus smoothness. At the hottest S6 mode, gearshift takes as little as 80ms."
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