Inversely, should you be out four-wheel driving through some rather bumpy or rutted out tracks, you can dial the controller down, so if you inadvertently mash the accelerator, the input won’t be nearly as aggressive and induce bunny-hopping.Īnother excellent use for the ‘economy’ settings is in soft sand it will let you accelerate without spinning the wheels, so you can stay up on top of the soft stuff, instead of spinning and sinking into it. This improvement in the acceleration profile is what some have incorrectly mistaken for extra horsepower. Where the throttle controllers shine, is that should you be towing a heavy load, you’ll get up and moving quicker. From a driver’s perspective, with this ‘power mode’ active, your 4X4 feels a lot quicker and more responsive than it did before adding the controller. Plus, it will give the 30 percent signal to the ECU straight away, as opposed to smoothing the ramp-up out over time. Add a throttle controller, and depending on the profile set, it may send a message to the ECU of 30 per cent when you’re only at 10 percent throttle input. ![]() That is not to say that it is physically quicker, as the signal is sent very near the speed of light regardless the pedal position is seen by the ECU as 100 percent near instantaneously as opposed to ramping up over time.įor example, as standard, 10 percent pedal input will give 10 per cent throttle signal to the ECU. Dependant on the controller, it can also make your pedal input range smaller. The main difference you will notice from the addition of a throttle controller is that acceleration will happen sooner and more aggressively. There is no modification to the mapping of the ECU, just the speed and amount of input that the ECU receives from the pedal transducer. ![]() It manipulates the signal sent to the ECU. This signal ramps up to 100 percent over a second or two, which takes any ‘jerkiness’ out of the acceleration profile.Īn aftermarket throttle controller module plugs in between your pedal and the ECU. The pedal also sends the signal as a ‘ramp-up’ signal, in that, if you quickly push the accelerator to the floor, the pedal won’t send a 100 percent throttle signal straight away. The ECU then interprets this signal more voltage to the ECU from the pedal is read as more throttle input. With modern fly-by-wire accelerator control, a signal voltage is sent from the pedal box transducer to the ECU. To understand how a throttle controller works, first we need to know how the ECU sees signal input from the accelerator pedal. ![]() There are some on the market, such as the iDrive, that have an ‘automatic’ mode, in which the controller will adjust settings based on how heavy you are on the pedal. This lets you dial the controller into the specific task you’re undertaking with your four-wheel drive. Most controllers have various settings, from a rather sedate ‘economy’ mode to an aggressive ‘sports’ or ‘power’ mode.
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