just picked up (bought) a Busa yesterday in Oklahoma and rode it back to San Antonio, Tx. where I live. It's an 06 with a 4 into 1 Yoshimura exhaust, STOCK air filter and a power commander 3 USB. The fella I got it from said he set up the power commander as recommended by some people on a forum (probably this forum). I'm not sure if he used a computer or not. I noticed 3 adjustments (low, mid, high) on the PC under the seat. the bike seemed to run great and got 42 mpg on the HWY. It seems a little more cold natured than the previous STOCK Busa's i had in the past. i haven't had a Busa in 4 years...so maybe it's me. Exactly what are the adjustments (3) for as I'm not computer savy to "download" a program? I know, I know! I'm probably in the 'older age category" on this board. Any help would be appreciated....or..."if it ain't broke..don't fix it..? There were no instructions for the PC3. thks, Michael