Easy to use for any experience level of tuner. The Power Commander 6 tuning device allows you to optimize your fuel and timing curve (where applicable) with downloadable tunes (maps). The Power Commander 6 is a plug & play setup and will allow your bike to run at its full potential. The small size allows you to install the unit underneath your seat; cowl; dash or any other suitable location. - Works in conjunction with the stock ECU unit but your bike will return instantly to the stock setup once the Power Commander 6 is removed. - No permanent changes are made to the stock ECU. - Connects via USB to most Windows computers to use with the included and new; Power Commander 6 specific; Power Core software. - Power Commander 6 tunes can be downloaded at Dynojet.com. - Adjustments to tunes can additionally be made which makes it fully user programmable. - Analog input allows you to install any 0-5 volt sensor and build an adjustment table based on its input such as boost or temperature. - Each cylinder can be mapped individually and for each gear; giving riders more granular control. - With a universal on/on toggle switch; or the Dynojet MAP switch; you can switch between two fuel/timing maps; like for economical touring and racing or high octane and low octane fuel. - Connect to various Power Commander accessories such as the Autotune; Quickshifter or POD-300; to give the Power Commander 6 even more features and functions for the ultimate ride. - Module dimensions just MCS vehicle fitment: Various 01-06 Softail (NU) 2001; 2002; 2004FLSTCI Heritage Softail Classic 2001; 2002; 2003FLSTFI Fat Boy 2006FLSTI Heritage Softail 2005; 2006FLSTNI Softail Deluxe 2005; 2006FLSTSCI Softail Springer Classic 2001; 2002; 2003FLSTSI Heritage Springer 2002; 2003; 2004FXSTBI Night Train 2001; 2002; 2003FXSTDI Softail Deuce 2001; 2002; 2003FXSTI Softail Standard 2001; 2002; 2003FXSTSI Springer Softail