found this mod on the liter side but woundering if any 600 have seen and or done it. i looked not to closely but i looked and did not see it. woundering what kind of get up and go it did for anyone if it is even on the 600rr 05'.
http://www.rogueracing.org/flap.htm

 

The mod looks easy enough, just a lot of plastic to take off. The write up you posted stated it would only produce 1 to 2 HP gain, nothing to really notice. The way I read the article, it improves throttle response and gives us a little more noise.

 

Ya, that's what I got out of it too. But, you don't have to take all of that off! Just remove the vacuum hose! that's it

 

I meant the fairing. It looks like you have to remove all of the fairing from the front to get to where you need to be. Let me know if you try it out.