I have the Dobeck AFR Plus. My bike was the test mule for the Rocket III codes. Mark developed a quick code for it last April and then we tweaked it in late November. Unfortunately it started snowing here in December and we have been iced over until just this week. I have not been abled to ride it much to test out the new code yet. I have to say the device is the way to go. The power, torque and MPG boost are well worth the price. The April code gave me about 19 HP and 10 TQ. I have not dynoed the November code yet. Mark will have the base codes set for you when it comes. However, what is so good is you can set the specific AFR where you want it in 3 different zones and you can set where the switch point for those 3 zones changes occur. All the settings can be changed on the gauge read out with 3 tiny buttons. Set where you want it or change it back to Mark's settings. You can have power or economy, it is up to you.