I have an '07 990, all the emissions stuff has been removed, Remus Roxx with a 2-1 pipe, Rottweiler intake, currently have 16/45 for gearing. Live in Denver, so ~5500-6000 ft above sea level. Thought I'd type out some of my thoughts of three different TuneECU maps I've tried. #1 Akrapovic Map. Supposedly this map runs rich. SAI, EPC and O2 boxes unchecked. With my current gearing my range was 125 miles before the low fuel light would come on. Initial throttle response was quite good. Crack the throttle and VROOM! Really good pick up across the entire rpm band. Coming off the throttle though is another story. Very abrupt, almost to the point of throwing me forward. Hard to modulate, particularly at low speeds. I really didn't like that, at all. #2 Hoologan Map More fuel than the Zuber Map, but uses the Zuber Ignition Mapping. SAI, EPC and O2 boxes unchecked. With the 16/45 gearing and this map I was getting low 100's for range. Much smoother throttle behavior compared to the Akrapovic map, both rolling into and out of the throttle. Good throttle response, couldn't really feel a power difference between it and the Akrapovic map. However, my bike really didn't like this map. I had a lot of issues with the bike dying when I'd put the clutch in coming to a stop, then the bike would be hard to refire, would run roughly and wouldn't take throttle. Was much worse the lower my fuel level got. Symptoms dissappeared when I pulled the map off and replaced it with either the Akrapovic or the Zuber map. #3 Zuber Map Stock fuel map, same ignition map as the Hoologan map. SAI and EPC boxes unchecked, so O2 sensor is active. Very smooth throttle behavior, particularly rolling off the throttle. Feels like it makes less power than the Akrapovic map but its hard to tell for sure, as it could just be the abruptness of the Akrapovic map that makes it feel much snappier. Haven't run through enough tanks to tell the range on this map yet. It feels like its making less power, which will probably turn into a longer range. I'll update fuel range with the Zuber map soon.