I'll have a guess: MAP would increase (more dense air), FF would increase, Power would increase, IAS would increase, TAS would reduce, Drag would increase, SFC would improve.
Shouldn't the FF remain constant since the mix control is regulating a valve and that valve will remain in that position whether it's cold or hot? Or does the increased density of air "drags" more fuel with it? It would be sort of the same effect as when you don't enrich the mixture through the descent. So...maybe the engine would detonate?
