Hey All, Just bought an '06 WR450F and started looking into the free mods talked about here on TT. I have some questions hopefully you all can answer. I've been riding it for a couple weekends here in FL in preperation for a big ride in WV in 2 weeks. I want to open it up before a go but don't want to screw anything up before the "big ride" or spend much time tweeking. I have 1 weekend left to get ready. With that in mind what would you do to the bike? Also, any help on these would be appreciated: 1. Which mod gives you the best performance improvement? 2. Can you do these mods independently of each other, or are there some that need to be done in conjunction with another? (ie; can I do the throttle stop cut-back and roll?) 3. I understand that the AIS kit stops the popping noise, but does it improve performance? I read somewhere here that it really doesn't? What needs to be done in conjuction with the removal? 4. When cruising along in a high gear and low RPM's, there is a knocking noise made when the throttle is laid on. Downshifting and getting the RPM's back up stops the noise. Is that normal? Agian, I have 1 weekend left before my big ride and just want to get the most out of the bike. Thanks!