My Z1000 is 140HP aT THE CRANK and 125 RWHP... that comes out to about 10.8%. thats with a 525 chain and sprocket set... so depending on what the busa's chain is maybe a bit more or less.. but id imagine a busa runs a 530 chain and sprocket set so id say 11% maybe... either way not a big diff on crank number. Givben a busas numbers that gives ya aobut a 165-175 Crank HP. But thats not including the ram air benfit im sure... Suzuki used to claim mid 180's.... id beleive it if u cram 100+MPH wind down the intake.
'03 Black Kawasaki Z1000, Muzzy Full 4:1 Exhaust, Mod'd Airbox with K&N, Tank and Tail Graphics, Freestreet Design Undertail, Ermax Belly Pan, HD Piston Case Sliders(custom),Puig Windscreen, Lightning Performance Frame Sliders.