OK, I have heard so much talk about the Thunder Alley pipe and wanted to experience it for myself. I have personally ridden a 400EX with a stock pipe and a Thunder Alley pipe. After the ride, I could not believe the difference between the two. Actually, I don’t like quads in the first place and haven’t ridden it since the pipe change. Not because I am afraid of the amount of power the quad has now, it’s because I don’t feel comfortable on a quad in the first place and now you just increased the feeling even more by giving it more power with the pipe change. After hearing the raves about this pipe and getting to know Bob, I designed the website for him I have shown up here in TT now and again answering questions about the pipe, as best I could, without actually owning something that had the pipe(besides my son’s XR50). I finally purchased my ’03 CRF450 last Saturday. I am coming off a 93 KX250 that ran with the best of them but its old technology just can’t compete with the new bikes. Being Anal, I refused to take the CRF out until all my aftermarket plastics, graphics, Thunder Alley pipe and Works Connection goodies arrive. Well, I got a little anxious and took it up and down the street a few times. I was amazed of the throttle response and power this bike had. It would lift the front wheel of the ground without breaking a sweat. Today was the day Bob put on my new pipe. As soon as I got home, I pulled the bike off the trailer and fired it up. After it warmed up, I attempted to take it down the street again, to see if everything that I have been reading on here was true or just some crap because you just spent $250.00 on a pipe and by god it better add more power whether it did or not. While in first gear I rolled on the throttle and rear wheel spun. I shifted into second, rolled on the throttle and the rear wheel spun. I shifted into third, rolled on the throttle and the rear wheel spun. I shifted into fourth and the rear wheel spun. I then stopped because I had gotten up to such a high rate of speed so quickly, I ran out of road. The entire time I was thinking, “Holly SH__”. Needless to say, my stock tire will not last very long at this rate, who cares anyway. I rode the bike exactly the same way with the stock pipe as I did with the Thunder Alley pipe. You should see the tire marks down the street. My nieghbors must hate me. Hahahahahahahahahahaha After this, I called a local shop who has a dyno. I have been waiting for someone to put up some facts. People CLAIM they have the dyno results but none of us ever see them. This will be done at my expense, as soon as I can get the extra money together. The only reason I am doing this is because I believe in the product. If I didn’t, I wouldn’t have offered to build his website for him. Now I know I made the correct decision.