I just don't get it. Every time a newcomer ask for tips on modifications there are a team of folks saying stuff like: it's only a 250, don't waste your money, buy a second hand SS bike and so on but the truth is MOST of us have made performance modifications on our bikes.
I don't like a heavy and bulky SS bike to go through heavy traffic, I just love to hang around on my little CBR and I just wanted a little more pick up for my weekend rides. Is that a sin??
I think it really centers on the individuals expectations. I for one wanted a bike to learn on, and to commute with. I knew going in that I wasnt getting a "fast" bike. Right when it came time to purchase the Ninja 300 was released, so I hemmed and hawed some more. Ultimately I chose the Honda. Its light, fun, easy to learn (hard to master! lol), and, its a Honda!
Im not staying stock (obviously if you have read my jbp thread), but its more for the fact that I like to tinker with stuff than anything. The hand grips were too small and I felt more vibration than I cared for, so I added foam grip covers.
I dont really care for the stock exhaust note, and managed to find a used akrapovic for about half of what it retails for.
I used the difference to pick up the lowest cost dfc I could find.
From my experience with cars, piggy back units/tuning typically smooth out power delivery (mostly by way of adding fuel), while decreasing fuel economy. But at least on the 250, the mpg loss is negligible for me. 60-65 mpg is still well above my FR-S at 22-26 mpg. And the jbp did indeed smooth out the power delivery.
Above and beyond that, any mods will be just because. I will more than likely end up with a pcV & tune since I am not that far from Jetttuning. I realize its financial folly, but thats ok for me and my budget. I will do it for the tinkerer I am.
By far the best thing I did was the MSF basic rider course. And even though the sport bike course is mandatory for me (military), I am looking forward to it. When I can get more professional training, I will.
So I guess the real question is 250 Angel, what do you expect to get out of the bike by modifying it?