I put a Q4 exhaust on the wifes bike. That alone let this thing breathe better. I noticed a big difference right away and so did she. But the other day was my first time out on trails with it. WOW that thing climbs way better than it did. You can really lug it down. I kept looking for bigger, nastier hills to climb. I just took it out for a few minutes to make her holler at me, but I took about a two hour ride through the hills here at the ranch. What a great bike. Open it up and let it breathe and you will be much happier with it.
08 Honda CRF230L (The wife's ride), 2010 Yamaha WR250R, 2011 HD FLHX Streetglide