What is a power commander on a motorcycle? How to Install?

What is a power commander on a motorcycle?A Power Commander is a brand of fuel injection or ignition timing manufactured by Dynojet Research Inc.

The Power Commander is used by motorcycles as a way of boosting their engine performance to a higher level of horsepower than a rider might get from the motorcycle’s stock engine performance. The Power Commander doesn’t take long to install and doesn’t require permanent bike modifications to be used.

What Is a Power Commander on a Motorcycle?

The Power Commander is a fuel injection and, on some models, an ignition timing adjustment unit that plugs ‘inline’ with the bike’s stock ECU (Electronic Control Unit).

What is a power commander on a motorcycle

Changes are made to the bike’s fuel and ignition curves via the Power Commander’s onboard microprocessor. Using this technology we are able to provide a wide range of adjustment without making any permanent changes to the bike’s ECU.

The Power Commander uses original-equipment style connectors so that no splicing or cutting of the harness is required. Simply removing the Power Commander unit returns the bike to its previous stock condition.

How to Install

The Power Commander is a small, square-shaped device that plugs inline into the motorcycle engine’s electronic control unit.

The Power Commander’s connectors do not require any splicing or cutting of the engine harness, which means the modification can be made quickly and without damaging the bike. The modification can be made in as little as five minutes, according to Power Commander’s official website.

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What It Does

The Power Commander has a microprocessor that, when plugged into the engine, can manipulate the motorcycle’s fuel and ignition output. When it does this, it overrides the factory settings of the ECU but does not permanently erase those settings. In fact, all the owner has to do is remove the Power Commander from the bike to restore its original engine settings.

The Map

Many motorcycle riders use the Power Commander to get a power boost. The Power Commander comes with several factory-installed “maps,” which is a PC term for a program that tunes the engine to run at a level that matches the bike’s specifications.

The base map matches basic bike specifications. Alternate maps, which can be downloaded from the Power Commander website, can match specific types of bike modifications, such as slip-on exhausts.

The Power

Every bike engine has an optimum air-fuel ratio that allows that engine to run at an optimum level. In many cases, a Power Commander can help that bike get closer to that optimum level than the bike’s stock specifications.

Information provided by Dynajet Research shows that bikes at stock specification, or with minor modification, operate at 65 to 70 percent optimization, while the Power Commander helps bikes operate at 85 to 90 percent optimization. That percentage came with the PC using the base map program.

Who Uses It

Power Commander is considered a “race-only” line, which means that most of its users are bikers who drive competitively. Power Commander manufactures a III line that is nearly as powerful as the PC but can be used by bikes you would find on the street, like Harley-Davidson and Dyna. The PC III can help those bikers optimize their fuel economy.

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Power Commander Fuel Controller

The Power Commander FC is a new fuel management device pre-programmed with make/model specific maps. The FC unit also enables you to modify or change these maps on the fly, without a computer.

What is a power commander on a motorcycle

Select between a Power Commander FC map, custom-built maps, or even fine tune low, mid or high rpm ranges while sitting on the bike, with no need for a computer.

How To Fit A Power Commander

There are other devices that do a similar task, but this one’s the market leader. Here’s how to do one, in five steps that will take a couple of hours max.

Get access

The biggest job is usually getting access to the injectors. On most sportsbikes you need to lift the fuel tank, normally by removing the seat, unbolting the tank at the front, and hinging it up.

The four injectors are in a bank below the airbox – some four-cylinder bikes have two banks, including one in the top of the airbox, making eight in all, but you just want to access the lower ‘main’ ones here. You’ll also need to find the throttle position sensor connector, which is usually on the right-hand end of the throttle bodies.

Position the commander

Find somewhere protected from rain and engine heat to mount the power commander. A good place is normally under the seat, and you get a sticky Velcro patch to secure it there. Feed the PC wiring harness along the subframe rails, and down towards the battery and injectors.

Connect to the battery

The power commander has one black 12v connector, which goes onto the black negative battery terminal. Then, for a four-cylinder bike like this Hayabusa, there are four pairs of male and female injector connectors, which ‘tap in’ between the bike’s stock wiring harness and the injectors.

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That takes the injector signal voltage away to the power commander, which alters it according to the map, then sends it back to the injector via the power commander connectors. The throttle position sensor is also tapped into in the same way, so the power commander knows how much the throttle is opened.

Connect to the injectors

Unclip the injector connector, plug it into the power commander wiring, and plug the power commander connector into the injector. Do the same for the other three, and the throttle position sensor plug.

Check and start the bike

Make sure everything is tight and properly connected, and switch the bike on. You should get a light on the power commander, and the bike should start and run as normal. Switch off and refit the tank, seat, and any other panels you had to remove. Now, download a suitable map from www.powercommander.com or get down to the dyno shop for a proper bespoke tune.


Does a Power Commander increase horsepower?

The Power Commander is a tuning tool to adjust fuel, and on some models ignition timing. Just adding a Power Commander to a completely stock vehicle usually does not increase peak horsepower. It usually will improve drivability, throttle response, and mid-range horsepower and torque.

How much horsepower does a Power Commander add to a motorcycle?

Installing a Power Commander won’t improve the bike’s horsepower or torque on its own. To get the best from a Power Commander you have to tune it to suit your motorcycle. This involves modifying the map or uploading a new map.

Are power commanders bike specific?

The connectors are specific to your year/make/model and the maps are based on your engine, mods, riding style, etc…

Above is information about What is a power commander on a motorcycle? that we have compiled. Hopefully, through the above content, you have a more detailed understanding of How to install? Thank you for reading our post.

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