ok I have a 2002 Honda 400ex with 440 big bore kit, stage 2 hot cam and racing clutch. I want to get more power out of it but I also want to get more top speed out of it without losing much bottom end. I plan on mixing up my sprocket ratio and going from stock to +2 front and -1 back but I also want to get a dynojet kit but ive heard they are worthless but ive also read they great and have read that you gain 5% power. please help!!