Very very few people I suspect have ridden the VTEC VFR the way Honda engineers meant it to be ridden. Coderighter, you gotta hack that ECU, brother.
Meanwhile, I dunno, I've always been a carb guy, don't know nothing bout no fuel injection. But it just seems to me, this beast is too lean down low; it hesitates when you crack open the throttle and I think the overrun shutoff aggravates this. I do think richening things up will help, but that becomes a mapping issue and maybe the default map will work for you and maybe it won't. (With the idea being, by disabling the 02 sensors you are forcing the default map.)
If it doesn't, you can go the Coyze route and make it rich AND smooth, or you can go the Coderighter route and try to make it perfect. (Referring to PC maps.)
But I gotta think there are some ECU's locked in a safe somewhere in Japan that make this the best bike ever made. And dammit, I want one.