Spoken to that dude at FAT before, he's been playing with the set up for a few years now getting it right...and blowing up engines at a fairly regular occurance.
here is one of the older set-ups
If he has finalised it ready for production I will be very interested. Looks like a compounded set up similar to what they run on the big trucks with the SC feeding back into the turbos to spool them up quicker...not a new idea by any means, but hats off to them for getting it onto a scooby!