It's hard to imagine scaling that idea down small enough on a .40 sized speed ship. Take the current level of performance with just a tuned pipe, add forced induction and then the pipe becomes the limiting factor unless you increase it's size I suppose. Adding girth to the pipe makes it fatter than the engine which isn't good. As usual, it looks like an idea where you realize certain gains if you can figure out how to limit the losses.

that thing drawing 220 amps at cruise speed. thats over 4 hp. you will need a 300+ amp alternator to run it which will consume around 8 hp to turn. the bigger alternator will be 3 times the weight of a normal one, plus the wiring and all. good idea but need to get the amp draw down some.

It would be good on an econobox that is severely underpowered and just turn on when the pedal is to the metal.