Subaru have a GREAT system that was installed in Legacy's from 93-2003 called Sequential Twin Turbo providing exactly what your are after CPT
admittedly its not perfect but nothing really ever is....
Filter is lame can filter whole worlds or part words and we had trouble with Scrape cos rape was in the list then **** was too but fucken was missed cos we had set whole word only etc
no loud Noises please Turtle *removed*
Big Choccy fish for the man with his eyes open!
http://www.myconfinedspace.com/wp-content/uploads/2006/10/Whambulance.gif
[note not shown for fear of straying off topic too far]
help us to help you and don't be afraid to speak up if you feel there are/could be improvements in the way things are done (Online)
constructive criticism only and many good points were bought up in the now infamous thread sleeping in the chiller section
your sig is mesmerizing
valves reset/flushed the system on operation
might be like Air-con - always a good idea to give it a cold blast during winter to keep it active