[dremd]

We discussed this some in my 6 speed conversion thread.

DMF's (which are typically very heavy) decrease fuel consumption by allowing operation in a taller gear than would be possible with a lighter/ less dampened flywheel.

However, unless you have a very tall top gear then I would assume that you are cruising at 70 in top gear regardless, so no gain to be had.

Now with heavy pulse + glide a lighter flywheel would certainly help (less mass to spin up/ down.

Hey auto tech, Where did you get info on lighter flywheels + traction? I find it more difficult to launch cars with lightweight flywheels, but that could be a function of what clutch is typically attached (double and triple disc for us Supra guys).