Actually the meter is mounted in a BBK fender cold air induction kit, modified to fit I might add. The meter is just out of calibration. The motor idled fine given a vacuum leak, the motor just wasn't getting enough air. The motor was running rich but the MAF seamed to be in a lean condition. Putting the meter tube on the bottom (or weird position) in the air stream fooled the computer into a rich condition and opened the air bypass.
Electrical noise in the MAF due to fan wash, can be read by a digital voltmeter across pins C and D of the meter. The voltmeter should read between .600 and .900 volts on the D.C. scale at idle. On the AC scale the voltmeter should read less than .010 volts. With no shield between the air filter and the engine, the voltmeter will read above .010 volts and go to as high as .050 volts. This is known as the signal-to-noise ratio and is similar to trying to listen to someone whisper next to a jet plane.
So, what is the best price I can expect on getting this thing recalibrated?
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