I am looking for more power!! I have all the mods I can think of... Full Muzzy, ZX14 TB's, PCV, Autotune, BMC, etc... What is next? Nitrous? Turbo? or just a different bike? I really really love the Concours and yes of course it is the fastest color (SilverDamit) I was thinking that a 40hp shot of Nitrous hidden away in the bags would be good without requiring any engine mods as the turbo from what I read really requires forged pistons for reliability. Maybe I should just except the Connie at the 160hp or so that it dyno'd at and buy a different bike for my need for speed....
Heh. Quite a few replies, no real answers, eh?
Advice if you want it: Stay away from nitrous unless you're just looking for better dragstrip numbers or doing something sneaky to win some money/fame/infamy street racing. It's too much of a hassle for so little benefit for a daily driven machine. Been there, won't do it again.
As for the Turbo: it's freakin' fantastic when you have it dialed in right. I honestly don't think you really need engine mods (aside from clutch mods) for one to live in the 5-7psi range...... especially if you're willing to use chemical intercooling. But I will go out on a limb and say this: it won't be enough. If you're the kind of guy that wants/needs more power on a C14, you'll always want more. It's just in the blood.... you get used to almost any level of insanity after a while, unless it really scares you every time. You can get another fast stock bike, but I suspect that you'll want more from it after you've lived with it for a while. Not a bad thing in my book.
As ridiculous as the Turbo C14 felt at first, after a year or so I started wanting more. I personally was going to leave the C14 alone at that point and start building my other bike.
The two bike theory is a great compromise. By spring next year I'll have the turbo back on the C14, and I'll have the zx-10r up and running on low boost (maybe the higher boost motor if taxes are nice to me). The turbo C14 as the "slow" bike and a slightly looney zx-10 as the "scare me every time" machine should be enough to hold me up for a while I hope. If you can settle on a stock bike that will do that for you, go that route. New sport bikes are amazing & great for far more reasons than just power, and having the C14 as a back-up/practical machine is a great plan.
If you have to have just the concours as an only bike, you're pretty much at the end of easy mods for power. You'll have to get into the engine for more power at this point. If you're in there playing with cams and/or pistons, I would be of a mind to build it for a turbo at that point. Making an NA C14 make much more power than you already do will start getting expensive, fast... and the friendly street manners of the motor will deteriorate just about as quickly. Dropping weight is ideal to going faster, but you're going to run out of options quickly if you're not willing to sacrifice creature comforts. And there's no point in having a C14 over a sport bike if you're not interested in creature comforts. On top of that, meaningful weight reduction will cost more than the other two options combined.... probably more than a nice used sportsbike if you really get deep into it.
Short answer: turbo it, get a different bike, or spend huge amounts of money making it significantly lighter. The benefits and drawbacks of each are subjective and only for you to decide (and live with!). Just my 2 pennies.