The limiter override is a great way to have aerial battles.

Limiter override

 By pressing L1,L2,R1,R2, and the right analog stick,  this nifty little trick will give you unlimited energy for a little while, but when it is over you will be out of energy for a long time. This can be a bad thing if your AC uses lasers for protection so make sure when you use this you have a good spot to land, or a nice hiding spot to use after the juice runs out.

Overboost

By pressing the left analog stick, your AC will zoom forward at unimaginable speeds however, this will burn your energy and greatly raise your heat levels.