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Make Your Drive-By-Wire Rig More Responsive

Posted in How To: Electrical on May 10, 2017
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Most modern vehicles use wires with current running through them to the throttle pedal rather than strands of wire that create a cable physically connected to the throttle body. This was done to simplify the engine bay and eliminate the need for cable routing. When you consider that your engine is computer controlled anyway, this starts to make sense. But when you mash the pedal and nothing happens, you might start to second-guess your drive-by-wire throttle. By adding a computer between your foot and the throttle valve, OEM manufacturers have the ability to minimize tire spin and increase mileage by limiting how quickly the acceleration can be applied.

That is all well and good for the family minivan, but when we need to climb a loose hill or pull out in traffic we want all available power right now. Our 2014 Ram 3500 had a bad habit of being slow to respond, particularly when we got off the throttle and then back on it again quickly. Fortunately BD Diesel Performance offers an affordable solution that allows you to increase the responsiveness of your pedal with simple plug-and-play installation. And despite the company name, BD’s Throttle Sensitivity Booster is available not only for Chevy, Dodge, and Ford diesel trucks but also gas-powered cars and trucks, including the Jeep Wrangler. While the Throttle Sensitivity Booster is not a replacement for the appropriate axle gears in a lifted Wrangler with oversized tires, it does noticeably improve responsiveness and installs in just minutes. Maybe computerized controls aren’t so bad after all.

Computers. The future is computers. Or actually the present. You used to use springs and screws to make a diesel truck more responsive; now all you have to do is plug in a computer.
The Weatherpak-sealed cover of the BD Diesel Performance Throttle Sensitivity Booster comes off to reveal the circuit board inside. We didn’t just do this for the photos; you need to remove the cover as part of the installation.
BD Diesel Performance includes detailed instructions with photographs and explanations of each step. BD also has instructions on its website for all products available there.
An optional switch is available that allows you to adjust the throttle sensitivity from stock, 50 percent more sensitive than stock, and 100 percent more sensitive than stock—all with the push of a button.
This is the accelerator pedal on our 2014 Ram 3500. Note the wires and plug at the top. The Throttle Sensitivity Booster connects inline between the factory wiring and the pedal. No cutting or splicing of wires is necessary.
After installation it is necessary to push the “learn pedal” button on the circuit board and then slowly depress and release the pedal several times. Small lights within the Throttle Sensitivity Booster illuminate during this step to let you know that it is functioning properly.
The final step was reinstalling the cover on the housing and mounting the Throttle Sensitivity Booster. We used zip ties and coiled the extra wiring under the dash near the kick panel, where it was out of harm’s way and wouldn’t accidently get kicked.


BD Diesel Performance
Sumas, WA 98295

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