I could care less if my engine life would have been reduced without a DMD or even if the friggin thing reduces my engine life or I loose X amount of HP. A DMD makes your car feel so much more refined. It is sooooo smooooth... That alone is the reason why I purchased one.
It would be pretty hard to tell if harmonics destroyed an engine in the first place. Lots of people just do it for the peace of mind... even though the proof may be lacking.....
Almost forgot... When you see a Duratec running on the Dyno with a DMD, the engine doesn't move..... Watching other cars on the dyno, all sorts of vibration and movement. Something else to think about.
