http://www.openecu.org/index.php?action=history&feed=atom&title=Speed_densitySpeed density - Revision history2026-08-20T18:55:07ZRevision history for this page on the wikiMediaWiki 1.13.1http://www.openecu.org/index.php?title=Speed_density&diff=1528&oldid=prevFreon at 04:15, 7 September 20062006-09-07T04:15:22Z<p></p>
<p><b>New page</b></p><div>== Speed Density ==<br />
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Speed density is a tuning methodology where fuel and/or timing is determined by the speed (RPM) of the engine and the density (bar, psia, etc) of the intake air. <br />
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Many aftermarket [[standalone]] or [[piggyback]] systems use a speed density system, as well as older cars. However, most modern factory vehicles use [[mass air flow]] systems. <br />
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=== Advantages ===<br />
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=== Disadvantages ===<br />
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Speed density requires tuning many maps for consistent results, such as air temperature compensation and engine volumetric efficiency. Manifold pressure sensors do not react quickly to rapid changes in pressure.</div>Freon