How to keep my old school Mamba Max from overheating on 3s.

[Bmr4life]

I'm running a feigao 8L with the MM in my crt.5 Temps, Motor - 150, ESC 160, 3s lipo 90.

I'm geared to hit 56mph using the 3s lipo and I like it that way, lol. The problem is the esc gets hot and begins to cut out (no motor or servo control). Is this the issue running a BEC will rectify. Do I do that first or figure a way to put on a fan?

I did have a 2650kv with a MMM in the car, but I just burned one of my other MMM's so this one is getting slightly down graded.