I just picked up my new 06 WR 450 and took her for the first ride today. The bike is bone stock, but I did expect to have a bit more pop. I was not pushing the bike hard or anything like that, but from time to time I would twist the throttle thur one gear to see what kind of pull she had. I guess my question is, how different will the bike perform with the the free mods? I have not been on a dirt bike since i was 22 (RM 125 two stroke) and now am 37, so it's not like I"m coming off a bigger bike. I heard that these bike are pretty mellow in stock form...is this true? I also noticed a Honda CRF 230 with what looked like a BBR Exhaust and really liked the deep throaty sound it produced. I went on the their web site and noticed they don't make one for the WR's. My question is, is there a slip on exhaust for the WR's that will give me a smilar deep throaty sound I heard from the 230? I also like how it was not very loud, just deep sounding. Thanks in advance.