On my SVT, I really didn't notice much difference between the stock crank damper and the DMD. The obvious side effect of the DMD was a longer spool up time in the lower rpms, but that's about it. Above 4000rpm, it was the same as stock. One small observation I did hear on my SVT was the mechanical tone of the engine changed.

.....BTW, I'm running the stock crank damper.

Christopher A. Wong chris@ctamotorsports.com CTA Motorsports