does ram air affect economy?

Actually, the FACT is like I stated. IF the engine is tuned to the extra incoming air being rammed into the intake, then that means it has been richened up to match the increased COLD air coming into the engine. Cold air means dense air. that means more air and fuel packed into the engine. More air + more fuel = LESS MPG. Always has, always will. I don't give a **** what anybody says.