I was Army, and unlike a lot of the Warrant Officers I liked being called Chief..lol
About the only time I was called Mr. was when being introduced to someone. My daughter just resigned and she was a Captain (Army Nurse). Fortunately, I had already retired so she never got a salute..lol

I like the Pro Charger deal as it doesn't need to be spooled like a turbo but you can control the boost as if it were. Only disadvantage to them is it seems they are prone to breakage and upkeep in general, my opinion.
I've thought of ways to control the boost on a roots but not sure what dumping fuel and boost would do to the tune up. Can you imagine the flame a guy could get using a dump valve attached to the intake of a blower, and dumping into the headers??
Could make for some serious explosions too I guess if the flame traveled back up the pipe.

Dave