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Old 06-13-2012, 10:01 AM   #2 (permalink)
gone-ot
...beats walking...
 
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TURBOCHARGER takes its "driving" power from the waste heat-energy of the exhaust, ie: basically "free" power.

SUPERCHARGER gets its "driving" power directly from the engine crankshaft, usually via an under-driven belt ratio, ie: it's a not "free" power but rather is a "load" on the engine at all times.
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