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it's hard to understand the physics of how a supercharger could increase mpg. More air in cylinder would mean more gas also to maintain the right air/fuel ratio.




Yeah I hear ya, I think it has something to do with the engine not having to work as hard to maintain speed.
While at 65mph the engine isn't under boost, He's got 25lbs of vacume but the supercharger is still spinning so I think it just helps the engine breath.???? But it does help his milage on the highway,only highway though. When he gets under boost it drinks alittle <img src="/forums/images/graemlins/smile.gif" alt="" />

_Chris..

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