a unit is currently made for model car 2 strokes , it was tested by some heli guys, it dont work its just b.s. hype, but people hear supercharger and think wow must be awesome.
Every time someone has told me they made one that works and provides a performance gain, they could only offer anecdotal evidence, Not enough to convince an old cogger like me
I remain open to enlightenment tho, I have a hat ready for eating