Originally Posted by
C.P. Engineering
Mike, the bike has a big bore kit from Hammer Performance, their comp valve job and a very free flowing (basically straight piped) exhaust. Now agin, just assuming that with an Alpha-N tune there are histograms/maps that relate the throttle position and rpm to the volume of fuel injected. I'd like to think that you would scale fueling in proportion to the added CCs and possibly a tad more at higher rpms as the efficiency might increase a bit up there due to better air flow from the other mods.