a lot of guys accomplish the same effect with zipties? :scratch
i'm curious how you do that? anyone?
Someone posted a thread a while ago about doing it with zipties.
Basically you take the throttle cables off, run a super small ziptie in the groove that they go in making the circumference bigger thus shortening the throw. You cut the head off the ziptie and glue it in there if I remember right but if you search you can find the original thread.
Aside from the extra 5 mph top end SPL mentioned, it also allows you to get to the rev limiter quicker in hooters at bike night thus making the college girl waitressing more likely to blow you than the next guy

unk lol.
For me it makes it a quicker trip from staged to WOT at the drag strip. I am sure other people have reasons as well but that's mine.