Here is a closer look at the sound of the build that DDM Works is in process of working on. The Tuning is not complete but in about two weeks the Dyno Tune of the Haltech computer will be finished. We did lots and lots to this Slingshot to create more HP. This is the first Slingshot with the Aggressive cams, Bigger Rotrex Supercharger, Haltech ECU and Water Methanol Injection Kit combination. This was all done with a very specific outcome in mind. Speed!! Check out DDM Works for more information. Tell them you heard about it here. DDMWorks - Research. Design. Driven.