A Power Commander is an important tool in fine-tuning your Suzuki GSX-R sport bike's fuel-injection system for peak performance. Traditionally, a GSX-R is set up on a Dynometer -- which measures the motorcycle's horsepower, torque and air to fuel ratio -- to provide a custom fuel curve that is programmed into the Power Commander through a software interface. While this will achieve the best results, doing so may be beyond most rider's budgets. Alternatively, a Power Commander offers a manual programming method, using the trio of buttons on its faceplate, providing a moderate performance increase with a few tuning sessions.
- Skill level:
- Moderately Challenging
Other People Are Reading
Start your GSX-R and let it idle for three minutes, allowing it warm up to its operating temperature.
Ride your GSX-R as you would for your intended riding environment. Racing will require more emphasis on top-end RPMs and higher speeds, while street riding will need a broader spread of power from low- to high-speed.
Take note of any flat spots in performance -- a point at which power will decrease before increasing again -- or bogging, not accelerating, while riding. Make a mental note of the exact RPM range that these problem areas occur.
Write down the results of your test ride on a sheet of paper once you return.
Remove the passenger seat from your GSX-R, using the seat release mechanism under the tail fairing, to access the Power Commander.
Hold down all three of the Power Commander's faceplate buttons and start your GSX-R. The Power Commander's LED gauge will illuminate briefly before settling at its lowest position, signifying that it is ready for programming.
Adjust your GSX-R's fuel curve, using the faceplate buttons. The button on the left will adjust the low-end RPM range (0 - 4,500 RPM), the centre button controls the mid-range RPM (4,500 to 8,500 RPM) while the right button controls the top-end RPM range (8,500+ RPM).
Select the button that controls your target RPM range, using your notes as a guide. Press the button once to enrichen - increase the amount of fuel - the target RPM range by one step, to eliminate a flat spot. Hold the button down momentarily to lean - decrease the amount of fuel - the target RPM range by one step, to eliminate bogging problems. Adjust all three RPM ranges as dictated by your notes.
Leave the Power Commander undisturbed for 30 seconds. The Power Commander's gauge will illuminate completely for a few seconds, signifying that programming has ended. Test ride your GSX-R again.
Tuning the Power Commander
Tips and warnings
- Refer to your notes often to see how the changes made while tuning have affected your GSX-R's performance. If the problems appear to increase, reverse your tuning method (i.e. lean out the RPM range instead of enrichening it, and vice-versa).
- For best results, load a fuel curve map that best fits your GSX-R's current set-up from the CD-ROM database included with your Power Commander to provide a solid baseline to tune your motorcycle. Refer to the Power Commander's users guide for more information.
- Don't make excessive changes in a single change. Drastically altering your GSX-R's fuel curve can be detrimental to its performance. Instead, make changes incrementally and observe how they affect performance.
- 20 of the funniest online reviews ever
- 14 Biggest lies people tell in online dating sites
- Hilarious things Google thinks you're trying to search for