Originally posted by jas_r34
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A MAP sensor is a Manifold Absolute Pressure sensor, it tells you how much pressure the engine is seeing, and you tune your load cells via what is known as speed density. Your load cells are a combination of rpm and the pressure as measured by the MAP sensor.
Now, there is MAF and TPS/Alpha-N tuning, but thats not what we're talking about here.
Also, just for reference, a 1 bar map sensor is for N/A, a 2 bar for up to about 15 psi, and a 3 bar up to about 30 psi.
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