[CrustyNoodle]

Nope!

Hotter engine temp = lower power, less fuel use, better emissions

Cooler engine temp = higher power, more fuel use, worse emissions

Think of it this way, the cooler the cylinder walls the more heat is lost to the cooling system (through the cylinder walls). Lost heat = lost energy = wasted fuel.

A colder engine is able to produce more power than a hot one due to all the same reasons an intercooler enables you to produce more power (ignition timing and charge density) - at the cost of fuel efficiency.