we talking about superchargers or turbochargers here??? You seem to be applying twin-turbo theory but calling it supercharger?
you cant twin supercharge, at least, i've never heard of such a thing a car with 1 bank of cylinders.
You need to research how a supercharger works, and how a turbocharger works, and then perhaps you'll see why not.
BASICALLY, your supercharger runs of a belt, so the fater your engine is turning, the faster your charger is turning. This gives you increasing gains as you increase your revs. Its always running, so if you want a bigger gain, you just fit a higher capacity of supercharger. It'll still give you the gain at lower rpms that a smaller one does, except perhaps giving more boost.
A turbo kicks in at a certain rpm, and dumps its entire gain on very rapidly. Then you hit the redline, change up, and your turbo drops out of action again giving you no boost anymore. You need to build the revs, then the turbo kicks in again. How long you have to build for is know as lag time, and THAT is why a small turbo and big turbo get fitted as a pair. It reduces the lag time and provides boost at lower rpms using the small one, then when you hit say 3300rpm, the big un kicks in too giving lots of boost.
All i can suggest is that you take out a subscription to practical mechanic, or start visiting sites online that teach how cars work. Theres one i've visited many times called howstuffworks. It'll grow your brain, i guarantee it.
Buzz
The champion of the Bravo 1.4
& now ex owner of a Bravo 1.8
