My 425 Cummins seems like it’s got 50 more Hp out West , we are out here on vacation I guess no humidity. Back in ky seems like it’s runn in a strain all the time. Gets about 6 mpg. It’s in a 2011 New...
High levels of humidity displace oxygen in the air and *reduce* the themodynamic potential of the air. Of the total air pressure, any humidity will consume a certain vapor pressure, reducing what is left for the partial pressure of oxygen.