So, 3 rides (total of 110 miles or so) since new on my 08 WR 450. First 2 rides were stock with just the free mods/ais removal kit/small baffle removed. Not bad, suspension way too soft of desert work, power a tad soft. 3rd ride after adding fmf Q4, GPR V4 stabilizer.....what an amazing difference the pipe made. Way improved "snap" and revs faster/higher. Makes it feel very close to my sons yz450 motor. The stabilizer made the suspension feel less scary, but it's still going to ESP tomorrow to let George make it raceable. I think I'll like this bike just fine, and the magic button is worth the price of admission.