[Red72914]

The Sprint Booster is essentially a voltage booster that is installed inline on the throttle circuit. The more voltage you send to the electric motor, the faster it spins up. Factory e-gas/DBW throttle systems are programmed with a certain amount of lag to prevent jerkiness in throttle response, especially on automatic vehicles. The majority of consumers want smooth ride and response from their automobiles.

The Sprint Booster isn't designed to add HP, it's added to decrese the lag and resonse time of the throttle valve. Think of it this way, you can open a door smoothly with a set controlled amout of force/pressure, or you can slam the door wide open with increased force/pressure. The Sprint Booster does this esentially by increasing output voltage to the throttle valve.

It doesn't remap the ECU, it does remap the TCU, it fools the system by sending a higher voltage. Even if you mash on the pedal, the stock setup is programmed to have a max output and lag in the circuit.

I've driven a number of cars with and without the Sprint Booster, it's nice to have the added oomph when overtaking or trying to get out of a sticky situation, especially in an automatic.