[Christ]

Is it possible that the RAM is giving too much flow for the RPM's you drive, effectively turbocharging your intake with warm air? That, obviously, would cause more fuel flow, negating the warm-air in the first place.

I wonder - can you watch your MAF's signal in real time? It would be interesting to see a datalog from it, using each type of intake, so we could compare the results and compare the data to check if there's room for improvement or a change in the testing anywhere.