I can't comment on the strip but I have fitted them on two road cars. (Not my cars so experience was limited to the test drive after fitting.)
Engine 1 was a 4 cylinder supercharged engine. Acceleration and responsiveness were improved, however the car was harder to pootle round in traffic. I stalled it a couple of times which was a tad embarrassing.
I'd imagine that it would be just a matter of getting used to it, but it highlighted why cars have heavy flywheels in the first place.
Engine 2 was a three litre V6. This had all the benefit of the acceleration and pick up of the 4-pot but on an engine with enough torque at idle that the lighter flywheel was no hindrance. As Tony the Tiger said it was GREAT. I didn't want to give that one back afterwards.
Both examples were in fitting aftermarket fidanza lightweight flywheels rather than modifying the existing items. This strikes me as the more sensible way to go rather than machining lumps off an existing part.
Not sure any of that helps you though
but thought I'd prattle on anyway.
Owen.
