IMM Engines 408 build

The factory Magnum PCM is a good piece and has pretty good flexibility for tuning, but I don't think anybody has the ability to do live changes. Even on a dyno with sensors you have to figure out what it needs, make adjustments in the software on a computer, then with the engine off you flash the PCM with the new tune. The guys doing this have really good baselines that only come with experience on these, so he'll be in pretty good shape.