Muscular Mustangs - View Single Post - Raw Horsepower or Supercharger, which is better?
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post #7 of Old 03-28-2005, 10:34 AM
Join Date: May 2004
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A centrifugal supercharger only makes boost when the engine is at a certain rpm, while a "roots" style supercharger makes boost just off idle.
So a roots type makes power faster, but will usually make some boost even at cruising speeds using more fuel. Thats not to say they will suck down the fuel though as the '03-up cobra has a roots supercharger.

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