For the N54 powered BMW, we offer two different throttle maps. One throttle version is not better or faster than the other. It really comes down to personal preference.
Stock Throttle (ST): The stock throttle maps use the same throttle mapping that the car came with from the factory. For example, the stock throttle provides almost 80% of the requested torque load at 40% pedal input and gives the sensation of speed.
Linear Throttle (LT): LT mapping is closer to a one to one ratio. If you push the accelerator pedal 30%, you should get roughly 30% throttle. The main advantage is the ability to better modulate power and more predictable performance.