[T.B. Yoits]

From past experience I prefer a supercharger for instant torque and performance. Turbochargers can produce extra horsepower from a little engine after they finally spin up while maintaining fuel economy.

You may find this 4 minute video interesting. It's from Jason Fenske on his YouTube page 'Engineering Explained', about twinchargers. He explains it very well. (He has quite a few other videos worth watching too).

https://www.youtube.com/watch?v=4birhPB5Twk

It involves bypass valves and a clutch on the supercharger. The supercharger handles the boost until the turbo spools up, they both run together through a crossover stage, until at higher rpms the clutch for the supercharger disengages and the turbo runs on its own.

[fireman15]

You may find this 4 minute video interesting. It's from Jason Fenske on his YouTube page ‘Engineering Explained’, about twinchargers. He explains it very well.

That is an interesting video! You do realize however that the twin turbo charged engines in the Dodge Charger do not have a supercharger? The engines will likely not reach maximum torque until they get to about 6000 rpm and then only after the turbos spin all the way up. It is an apples to oranges comparison when looking at a larger engine with a supercharger that develops maximum torque at half the RPMs. It is a different experience.