Oh yeah... some people think that coatings make all the difference. The air doesn't stay in the intake long enough for heat-sink to occur significantly. Maybe it will at idle with the throttle plate closed, but it won't make a difference at WOT.
How many people dyno their cars at idle and compare their HP gains at 0% throttle?
How many people that dispute coatings have a 1k ohm resistor in place of their Intake Air Temp Sensor already?