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Turbocharger from TurbochargerPros.com - Learn about Turbocharger and
Supercharger! Boost provided by either a turbocharger or a supercharger is 6 to 8
pounds per square inch (psi). Since normal atmospheric pressure is 14.7 psi at
sea level , you can see that you are getting about 50-percent more air into the
engine. Therefore, you would expect to get 50-percent more power. It's not
perfectly efficient, though, so you might get a 30-percent to 40-percent
improvement instead.
Turbocharger and Supercharger - Know the difference!
The key difference between a turbocharger and a supercharger is
its power supply. Something has to supply the power to run the air compressor.
In a supercharger, there is a belt that connects directly to the engine. It gets
its power the same way that the water pump or alternator does. A turbocharger,
on the other hand, gets its power from the exhaust stream. The exhaust runs
through a turbine , which in turn spins the compressor
There are tradeoffs in both systems. In theory, a turbocharger is
more efficient because it is using the "wasted" energy in the exhaust stream for
its power source. On the other hand, a turbocharger causes some amount of back
pressure in the exhaust system and tends to provide less boost until the engine
is running at higher RPMs. Superchargers are easier to install but tend to be
more expensive.
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