yes, but weight also applies more friction. And it slows down the agility of the car, or makes it feel more calm. The b4 was always too twitchy for me. And Where the weight is can effect the pendulum effect. It the weight is more central, as it is with the battery, that weight is more split between the front and rear wheels. If its more in the rear, then you can overload that end of the car and swing it. But IMO its a balancing act. You dont want too much or too little weight. Imagine if the car weighed 1oz with an 6.5 motor. You would be hard pressed to get much of that power to the ground. My point is, you need the right amount of weight, for a given amount of power on a given surface. You can go too far in either direction. Some people like very nimble cars... I dont like them. I prefer a more balanced feel from front to rear traction.