Quote:
Originally Posted by XBMW6
One change I'm sure will make it to the Coupe is the the updated V-8 engine from the Gran Coupe with more performance and efficiency. The new version of the engine develops 445 hp (a 45 hp increase), and makes peak torque of 480 lb-ft (a 30 lbs-ft increase).
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I suspect this is probably 100% electronics, and no real update to the engine. The engine as tuned in the current 650i is good for a lot more, without mechanical change.