Quote:
Originally Posted by SenorFunkyPants
Really? They give extra bhp to USA spec cars to account for the lack of the Efficient dynamics sytem?
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Our U.S-spec cars don't have the Brake energy recovery system that you have in Europe, but our alternator does disconnect at WOT as well. (freeing up top end power)
So our U.S.-spec alternator is
CHARGING the battery for less time...and it has to work harder to keep the stock 90Ah battery fully charged.
The BMW M division engineers have tweaked the ECU tuning to get the same power output for our engines as the Euro-spec cars, and the only real difference will be a slight increase in fuel consumption for U.S.-spec'd M3's.
This increase in fuel consumption will only be readily apparent, if you routinely rev the engine out near the limiter on a regular basis.