Originally Posted by Steve LS
I drive a diesel truck everyday but have never driven a Turbo gas engine to see how it acts. On the truck the turbo wistles right up once the R'* are up a little, whats neat is how they add pressure when more load is applied as in hills with out actually adding pedal. When the engine gets a load the exhaust pressure goes up spinning the turbo faster. A SC doesnt do anything until the engine R'* increase.
Well, the SC is always spinning and boost is more or less controlled by the "wastegate". When I go up a hill and need more power the wastegate closes, supplying the needed boost.