Well Me on my B-king and DWB on His 08 Busa did a couple roll ons tonight and it was closer then I thought it would be. He has Brocks exhaust and track map and is 20 to 25 lbs lighter then me, and my B-king has yosh slip-ons with TRE and modded air box. We went from 2nd gear into 4th and he had me by 3 to 3 1/2 bikes. So If I switch to the Brocks full system and map I feel I can close the gap by 2 bikes? then it's just a weight thing.