[DragonLady58]

What RnR said! Its a great stock bike engine, a big cruiser engine....performance wise add air intake, exhaust, emc flashed by Ivan, then if you need more, play with your injector size....if more is needed, go to a turbo and aftermarket ecm unit. After that, you'll be spending ALOT of money getting custom parts made to perform any higher....
Anyway, the 1500/1600 plateforms are alot better for performance....
The big Metric cruisers put the hurt on H-D's bac in the late 90's and early 2000's....then H-D started fighting back by building the big stroker/big bore engines....
Then 'Bang!'....the performance bagger market was born....
Suzuki was building a big V-Twin that was gonna compete with the big H-D's and others at the track, but I think they did something else it it....but they were even gonna have a performance parts section with it....
It would've probably been like the hayabusa program....