Change out your sprockets to get more acceleration. Are we talking 1/4 mile or what? If it's the track, you won't hit your top speed anyway and the gear change would work out fine. What performance mods have you done? I recommend a full system, air filter and a dyno tuned power commander for starters. That will get you around 117 hp at the wheel. This is if we're talking about the new R6 and not a R6S.