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On 17 Jun 2004 at 23:26, Steven Ayres wrote: > GregM=> The supercharger puts more air into the same volume -- which > => increases the pressure (and temperature). So, one filling of the > => combustion chamber will have more air (with its oxygen) than it would > => without the air compressor. > > OK, but assuming the supercharged system is set up for sea level, you'll > still be rich at altitude, wouldn't you? Not if the fueling system was doing its job, which consists of delivering fuel in proportion to the mass of air admitted. Besides, if the supercharged system was set up to always give sea level intake pressure, then the fueling system would never see any change. That's something that ANY fueling system should be able to deal with. ;-) -- Jim Adney jadney@vwtype3.org Madison, WI 53711-3054 USA ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ List info at http://www.vwtype3.org/list | mailto:gregm@vwtype3.org