(con't)
After banging my head against this wall for too long now, I have come to the conclusion, "To hell with A/F." The answer is to tune directly from peak cylinder pressure (PCP), just as Top Fuel, NASCAR, Formula 1, and Indy cars do. Those cars generally are not dyno tuned. It is better done on the road/track. Just run the highest PCP the engine internals will comfortably survive, adjust the postiion of the PCP in the power stroke with ignition timing (knock free), and hold EGT within safe levels. The optimum A/F ratio will appear by default. Then, just monitor that A/F for safety purposes to detect any changes in intake air flow, and fuel delivery.
The trick is to figure out an affordable (DIY) cylinder pressure tuning system...
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