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What is meant by a Speed Density tune or system?

April 26, 2017density meant speed system tune

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What is meant by a Speed Density tune or system?

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Speed-density calibrations use fueling calculations that come solely from static tables referenced against the Manifold Absolute Pressure (MAP) sensor, Intake Air Temp (IAT) sensor, Engine Coolant Temp sensor (ECT) and few other items. This calibration is well suited to very radical setups with very large duration camshafts that can cause reversion issues with a MAF tune at idle and low speed.