Yea...the engine needs more bass...I couldn't hear much rumble or rev once the sprockets were going.  Maybe it was the volume.

One question I have...what are the series of buttons you push and how does this work (not from a technical standpoint...how do I use it standpoint)?  I ask because I noticed that you're moving the turret and firing the main gun and machine gun without starting the engine.  I thought you had to start the engine to get any of the other functionality from the tank.