Nope- a C-14 is down by 40, 50 Hp and up 140 lbs. from a ZX.... it will not be as quick or as fast as a ZX without supercharging (mechanical or exhaust driven). Even putting a ZX engine into a Concours chassis will leave it considerably lower in performance due to the increased weight and the fact that the two sets of gears in a shaft drive bike consume a lot of power; chains consume almost none.
I do not want to get too deep into this in a general thread like this one though. There are already several, actually many, threads started about the 'pull the 'flies vs. reflash' as well as lots of threads about what both do, some in great detail. I have put quite a few details in some of those threads already and would be happy to comment in either a revived thread or a new one but I really do think the answers are already out there. As always on a public forum, there is a lot of garbage out there too but that is the reader's job, to separate the 'wheat from the chaff', use the good info and ignore the bad. And by the way, there are two companies out there at least doing re-flashes on the ECU so you can avoid that trap too.
I will say though that both methods work (re-flash and physically removing the secondary butterflies) and both have a slightly different set of both positive and negative points. My personal opinion is that a monitored (using an oxygen sensor) system that is 'self tuning' is best, and that can be done two different ways also although neither involves another company doing a re-flash.
There is a member here named Rembrant (Cory) who has gone down both paths with his C-14 and has written in great detail about both methods; I think his stuff is worth a read if you are interested in learning more about it.
Brian
Brian, I knew I could depend on you to throw logical confusion into the deal. Appreciate your input. With Guhl or w/o flies, does it pull like the ZX14 (not R), or more like the carbed ZZR1200, I had? From 4K up, it was a beast. Leaned forward and just hanging on for the ride. tp Thanks Rubberdown. WOW, all those chart numbers reminds me of what I deal with at my job. I hate rows and rows of numbers. Appreciate the help, though. tom