Well if ur ridin ur 1000rr at round 5500 to 6500 (diff for each bike) the second set of injectors will kick in givin ur a hell of alot more power. U can usually tell when this happens if ur ridin an all of a sudden ur exhaust and engine sound way louder than it did a second ago. If u cant tell, then u aint gettin the rmps high enough and ur switchin gears at to low of a speed. If u wanna try it just do a flat out run in first gear. U dont have to go all the way up to 90mph but take it up to sixty b4 u switch and i gaurantee u that u will feel the powerband (just try to lean forward a bit so the front wheel dont come up to much on u and if does dont get all scured, just let up off the gas).