you donl;t need to buty a meter, you can just use any digital voltmeter and dusconnectit after tuning.
If absolute accuracy is not neded, the DDs3 is a good indicator. Just need to calibrate it yourself. As regarding running 3D, your car should have a load sensor such as MAF and MAP and TPS (throttle position sensor). The MF2 can use any any 0-5V load related signals.
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Richard L
aquamist technical support
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