Experience reveals that modification(s) such as you have made, i.e. an exhaust and air filter should increase the horsepower by about 5% to 7%. Thus we have:
193 Crank HP Times 5% = 9.65 Hp, for a total of 202.65 Crank HP.
193 Crank HP Times 7% = 13.5 HP, for a total of 206.5 crank HP.
These figures are in line with most dyno results reported on this forum.
Whereas, you have 175 RWHP (about the normal net) being increased to 200 HP for an increase of about 14.5%. This would mean that this bike is now developing 220.985 Crank HP for an increase of almost 28 HP from just an exhaust and air filter swap. In other words about two (2) the maximum improvement to be expected. I would suspect Dyno input error of some sort, but you report a tremendous "seat of the pants" increase also.
I'm at a loss to explain this save to say, that in my experience something is amiss, as this much gain from the modifications reported is impossible.
PS: I have just reread your post, and it appears that NO modifications other than maybe an air filter were made after the original Dyno thus leaving us to conclude that you have gained about 28 Crank HP by hard riding. I'm sorry, but it just ain't possible.
Last edited by cwcary; 11-20-2012 at 10:23 AM.
Reason: Add Post Script