Originally Posted by feets
I was thinking about the same thing the first time I read this. He'll lose substantial low end torque.
However, he's not going to be lugging the engine down like that unless there's an off road excursion. Most of his time is spent in the sweet spot of the power band. I doubt that engine spends much time below 3,500 rpm.
Derek is one of the few folks that may actually benefit from the lightweight flywheel.
I'm looking at a lighter FW to help bring the revs up quicker when I come out of turns. Many of the tracks I run have turns that don't quite mesh with the gears in this car. Many of the tight turns require me to either carry through them in an over-rev situation or an under-rev situation. I usually choose the under-rev gear. The lighter FW would help me spin the engine up faster when I come out of a turn in those situations.