I agree with the comments so far regarding perceived value of 'can vs. flash'. For the vast majority of C14 owners with average or less riding skill, or the inability to tell the difference in a flashed vs. non-flashed bike, a real performance gain isn't even necessary. The bike has more power and capability than most people can use as-is. If nothing else was ever said on this topic, the previous sentence explains why there is reluctance in getting the flash.
I don't mean the following statement to serve as my review of the flash (yes, I have it), but I don't know that I have the riding chops or the previous experience to tell the difference between the flash and the two OE maps that came with the bike. I couldn't tell any difference in the two OE modes other than the slight bump in RPM going to ECO. So far, I can't tell the difference between SISF and ECO modes; I don't even know what to look/listen/feel for to know the difference. IF the benefits of the flash are real, then the problem in being able to experience them lies with me, or my ability, or my riding style, etc. I'll never reach 10k RPM; I've never been over 6k I don't think, and never will. I bought the flash on faith that the result would be a better overall bike for how I ride it. Maybe my definition of touring or low speed performance is different than SISF's. I don't doubt SISF's ability to tune or evaluate the results of his work, it just may be outside of MY realm to evaluate the results. Like I said, I bought it on faith. Maybe SISF can provide some 'tests' I can do between flash and ECO that demonstrates the difference? Even so, those tests may just be academic; if I can't perceive it in everyday life, then so what?
I'm not disappointed though; one thing I have noticed is an increase in MPG from 42 to 48 and the computed average is matching my odo/fuel pump calculations. I like that- and that is comparing to ECO mode prior to the flash. I have to believe that if the bike is getting 14% better mileage that SOMETHING is better; I just don't know what it is. BUT, my bike is also still breaking in AND I ran a bottle of Techron through it. So who knows?
I'm buying a can too; Area P carbon fiber as it turns out. It's the best looking can out there (to me), mounts the best, integrates to the bike and bag the best, and the owner has convinced me that he builds the highest quality product. If there is an accessory that could presume to tell the moto world that you're not a noob, even superficially, it's the can. For me, some bikes I'm interested in don't need a replacement can; the C14 and ZX14 need a replacement more than just about any other bike out there! Maybe not the ugliest can of all time, but in the top two for sure! Again, if there is a performance benefit, it exists in a place where I can't use it. As far as weight savings, yes it exists, but the average rider with all his farkles and luggage and riding gear won't notice it. Ten to fifteen pounds on a 700 pound bike with a rider and all his stuff? If you claim to notice the difference in what a pipe gives you in performance and weight, then you DEFINITELY need the flash!
BTW… motorcycle riding is mostly about image and feeling regardless of what you ride or how you ride it. So whatever makes a person look good or feel good on a motorcycle will dictate how he uses it and what he buys to accessorize it. I wanted a Harley for 20 years before I bought my first bike. Unfortunately, the type of riding gear that I choose to wear doesn't look good on top of a Harley (to me); it looks way better on a C14. So I ride a C14. And I ramble...