PROCOM Performance ECU for the Polaris RZR 800 (08-10) & RZR S (09-10) & Sportsman 800 (07-10) & Ranger 700 (05-09) offers FULL control over the fuel delivery, the ignition timing map and the RPM limit. This ECU is a direct replacement for the OEM unit, and can simply be plugged in and the machine will start right up. Also included with this ECU is our easy to use software that allow full control over the fuel and ignition parameters. Simply plug in the ECU into your computer USB port, and use the included software to adjust to your heart's desire. If you feel you want to start from stock again it only takes a few mouse clicks to return the unit to factory condition. Adjustments are possible between +80%/-30% of the stock fuel map, and +32/-10 degrees of ignition timing at various RPM points so you can make any custom map you would like. This ECU is a direct plug in replacement ECU. Simply locate and remove the stock ECU, and plug the Procom unit directly into the wiring harness. Suitable for stock and modified machines. We cover all our PROCOM Performance ECUs with a full one year warranty.