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Great info, thanks.
If it's true, I am having trouble figuring out why the E46 M3 could generate 333 hp from a normally aspirated engine, but BMW opted to use twin turbochargers to get 330 hp from the new engine. Perhaps the design of the new engine did not allow the greater displacement (was 3.2 liters in the E46 M3) that the M3 had.
Seems a bit odd for BMW to be going back to turbo gasoline engines, but maybe it had to do with driveability and engine character. Then again, normally aspirated engines tend to be more "civilized" than turbocharged ones, but there are exceptions.
I'm excited either way. More choices!! And who wouldn't want 75 more horsepower from the same basic E90 platform? I guess we will have to wait and see what the cost is. I also assume fuel economy will go way down too.
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