if mass air is so great then why.........

[Chevyguy]

Speed density is cheaper to set up and easier to tune if you can reprogram the computer. GM switched back to Speed density for a while on the TPI and LT-1 motors. For a stock car all the airflow parameters can be pre-calculated, thus no real need for the Mass air measurments.

Even a stock Mass air can compensate for a supercharger etc, much harder for a stock speed density.

Aftermarket systems that are speed denisty allow more adjustablitly, some custom setups have no space for a MAF meter etc...

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Frank W
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