mustang51js

so i bought a tuner and a 99 lightning 90mm mass air sensor since i was told my stock one wouldnt be good enough after the tune, so i hooked everything up and get a iat sensor code saying its to hot, i took everything out today and found out that the 90mm mass air doesnt have a iat sensor built into it like the stock one, so i switched the sensors around for now but left the 90mm plastic tube in place.So my question is do they make a combo sensor for that or do i have to get a iat relocation kit, and are they the same sensors or made is one made to calculate more air or is the difference only the size of the tube it comes with