DJ, would Franc mislead you?......it does make a world of difference for us throttle jockies....others just get use to the delay...the one I have for the coupe is just rediculous....breath on the throttle, and hold on...the roadster's which I purchased 3 yrs ago, is a little more subdued ...I will wait for Karl's review...it should be a good one...there was a guy who said he could build them for $30....don't know what ever happened to him, maybe a "greek" assasin got him....lol