I took my filter queen to my G4 Sawtooth with a 1.2ghz upgrade card to it.
I reversed the hose so instead of sucking up air it was blowing it, the dust that came out of my machine, literally made me choke!
so now because of that it runs 3? cooler!
I keep my machines pretty clean, I was surprized to see so much dust get blown out of the machine.
Anyway something to keep in mind.