Has anyone heard anything about these things???

http://www.mazdatrix.com/8forcedinduction.htm

Did you ever searched??

i kind of like them, a little high priced though

Here you go:
http://www.rx8club.com/showthread.php?t=127992

Yes, we have and the speculated mannerisms thereof are being debated on another thread. Mostly by guys who haven't used one, just like every other issue around here.

There's a good reason why I'll never use them. At least not a small engine.