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inferring airflow from throttle position (taken from the tps - throttle position sensor) is how alpha-n tuning works. possible with most aftermarket ecus and what the oem ecu does when the maf stops working. very effective at partial throttle where the narrow band o2 sensors can trim the car back to stiochiometric during closed loop operation. can get out of whack at wot /open loop, but this is where you get a wideband o2 sensor, an afr meter and a piggyback to fine tune your afr and keep things closed loop.
there is a tuner in britain that can tune your ecu to run in this manner. the purpose of this thread, however, was to consider using itbs with the stock manifold - the oem intake runners are, for all intents and purposes, venturi trumpets thatfeed each cylinder which draw from a larger plenum. this plenum has a single air source which is already metered by the maf.
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