Well I thought it was funny so I'll post it.
mine is 05sm, 3x3, DJ kit 150m and needle dialed, 100% STOCK EXHAUST!
my work buddy had to copy me and buy a 06sm but in yellow blue...
he instantly bought a yosh RS3 full system, put a 145m jet in, and raised his stock needle with shims. did not open the intake at all. (yes... its funny)
we raced from dead stop and rolling starts and mine smoked his every time...
plenty of witnesses.
it was pretty even at first but 4th gear on I was walking him... I even held back one time and could gain on him in 5th pretty good...
its funny because his is so loud and gets worked by stock exhaust bike.
lesson = black is faster, and best exhaust w/ no opening of intake is ridiculous.
sorry bud, I know you will read this... haha again