We have been a world leader in replacement ATV and UTV engine control units since 2004, and are located in Calgary, Alberta, Canada. We are the only company in the world offering full replacement ATV and UTV ECU's. ATV manufacturers purposely adjust the complex fuel and spark tables to reduced power output for liability reasons. Other companies offer piggy-back solutions, but it is virtually impossible to properly match those curves to give optimum power output. Our ECU's are designed for each machine, and then dyno tuned to ensure the fuel and spark curves are optimized for your ATV model. Each unit comes with the ATV specific connector to allow easy installation with minimum effort. It comes preloaded with one "factory style" map and one performance map with disabled limiters, and is user selectable with a front panel toggle switch.