What they said, including about the General.
Turbo can almost double the hp. Note that some 1000 cc Rangers top out at 50 mph.
Check this list:
You'll
typically see turbos used for high horsepower applications, while typically seeing superchargers for high torque applications. Not exclusively, but predominately.
Turbos need to "spool up", which means boost doesn't happen right away. OTOH, a supercharger provides boost almost
immediately. Top speed is achieved well into the upper RPMs and torque is best at the lower RPM range. Hence, the typical application of each.
Now when you start getting into super high performance and/or short distance performance, all bets are off. For example, a top fuel dragster or similarly focused vehicle needs everything it can get in just 1/4 mile, so you don't want to wait for a turbo to spool up. Top fuel cars aren't about one or the other (HP vs torque) - they are about BOTH. Sometimes you'll see both a supercharger AND a turbo in the same vehicle for this very reason.
Turbos are found more often on your standard OEM vehicles (e.g., Ford EcoBoost) because they tend to perform better when it comes to fuel economy. So CAFE requirements have a say in the matter.,
