"A new article 5.6.8 of the technical regulations makes it clear that in the engine plenum air (defined officially as from plenum entry to cylinder head) temperatures must now hit a minimum target.
The rule states: "Engine plenum... air temperature must be more than ten degrees centigrade above ambient temperature. When assessing compliance, the temperature of the air will be the lap average recorded, by an FIA approved and sealed sensor located in an FIA approved location situated in the engine plenum, during every lap of the race."
IF... we assume that the FIA is responding to the possibility that one of the teams was cooling the intake charge, how would they accomplish this under the rules as we currently (2017) understand them?
Would there be a net gain in performance using something like water vapor cooling when you consider the extra weight involved? Some kind of liquid/gas refrigerant?
Brian