Originally Posted by WheelNut
and a fan that is hooked up to the motor wires currently (going to switch to an rx connection soon)
Hooking the fan up to the motor wires would mean the fan will be revving up and down rather than constant which would not be the greatest, I would definately be hooking the fan either to the receiver or directly to the battery side of your ESC.
I also run a B44 and have ditched the undertray as it was keeping the heat inside way to much,
Also with the B44 the biggest thing I have noticed when people are overheating is their drivetrains. Some of the cars I have checked their drivetrains do not spin over anywhere near where they should be, mostly because of shimming. I put an old motor in mine and let in run on the bench to free it all up.