Quote:
Originally Posted by blue2000s
I've driven a couple of M3s and a couple of other 3 series cars. BMW uses very light flywheels and the engines are fun to rev as a result. If you put a lighter flywheel on any other engine, you could get the same sensation of throttle response and rev-ability.
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I think the Individual Throttle Bodies on the S54 M engine have a bigger role in the throttle response than a light flywheel.