Does setEnginePowerMultiplier actually work?

[Don Cezar]

I'm working on a nitrous script.

if (isNitrousActive){
    vehicle.setEngineTorqueMultiplier(TORQUE_MULTIPLIER);
    vehicle.setEnginePowerMultiplier(POWER_MULTIPLIER);
}

However, as shown in the video below, only changing the engine's torque actually make a difference in the car's performance. Power multiplier doesn't do anything, so I'm wondering if there's something I'm doing wrong or it just doesn't work? (POWER_MULTIPLIER) is the same that displays at the top of the screen in the Power (max x) field.