drew you can make some tuning changes on your bike by playing with the length of the pipes.with that said a foot may not make any real noticable difference.a friend of mine does hi perf gokarts,and he makes pipes for them that are tuned for the carbs.ie racing use only carbs.if you had really short pipes you would notice a difference in a couple inches.my opinion aw1.i don't disagree with you snuffy lol lol