TADAO: Power Box-Short

[twiin640_imp]

So I got to take the bike out this week to check out the powerbox exhaust. All I can say is, very nice. It had a deeper throaty sound that I was expecting. Not loud and I can definitely ride all day and not get annoyed with it. It was well worth the money spent and looks great. Fit and finish is impeccable and to me, the sound level is perfect.

This may sound odd but hear me out. It actually was quieter in my helmet than the stock exhaust. Notice I said "in my helmet". I wear a full face helmet when I ride. With the stocker on the bike, I used to get a resonance of a sort inside my helmet. Just a slight deep tone buzz. I had that on my M109 bike as well with a full face helmet. With the powerbox exhaust, the first thing I noticed was that the buzz/resonance was gone. You'd think that being a little louder than the stocker that it would be just the opposite. What I've come to find out is that if you've ever done research on exhaust systems and the science behind them you soon realize that there's much more to exhaust than expended gases exiting the tailpipe. I can only assume that the resonance is still there, just at a frequency I don't notice.

Doesn't really matter much though, the exhaust sounds and looks great. Secondly, using my S.O.M.P dyno, I'm not able to tell any difference as to an increase or decrease in power. IMO the only thing that changed is the sound and there's more room on the highway without the tree trunk stocker taking up space.