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MAF vs VVE: I would go with MAF results. Why? VVE is the theoretical air your engine is using. VVE is dependent upon your tune, in how well the VVE is correlated to different pressure ratio points of the engine, taking into account cam angle and various other sensor inputs (i.e. "manifold temp" that is derived from the IAT). With MAF, even if your MAF isn't 100% dialed-in for your car, as long as you are comparing on the same MAF and MAF tune (i.e. same measuring device), you will be looking at the measured mas-rate of air coming into the engine. Also, like said, with results in single digits like that, you are within error of variables.
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