(See http://www.billanddot.com/burgman650-yoshimura-install/ for additional pictures.) This is a comparison of Yoshimura's new exhaust system for Suzuki's Burgman 650 scooter and the OEM system. Note that the camera used to record this (from a distance of about 7 feet) has automatic volume control to prevent distortion; I don't think this came into play, but I'm not positive. Both scoots were run at idle, then 3000, 4000, and 5000rpm.
DID YOU HAVE TO rejet anything while installing this exhaust ???
Lps2005 1 year ago
I didn't make any change to the Burgman 650, which is fuel-injected. You hear the backfires more than before on deceleration, but I think that's only because they're louder, not more frequent. A Burger owner in Texas added a Yosh system, and he also added a Power Commander; I'm thinking of doing that the Summer, in conjunction with before and after dyno runs.
wspollack 1 year ago
Not to much louder than stock so it seems. Feel the difference in HP????
Deanzsyclone 2 years ago
Not a lot louder riding at a steady speed; much louder as you wind it out. If you omit the baffle, it's like having straight pipes on an H-D.
I plan to do dyno runs of my buddy's stock '08 Exec and my '07 with the Yosh system. I got an increase from 98MPH (stock) to 101MPH after installing the Yosh (all speeds GPS-verified, closed course, professional rider). To get a boost, you probably need a Power Commander or something like installed; I will be looking into that at the dyno shop.
wspollack 2 years ago
Nope, I don't feel any difference. I may have gained 2 or 3 MPH on the top end, according to my tests, but stop-light drag-racing with my buddy - who owns that '08 Burgman 650 shown in the video - still yields a tie.
wspollack 1 year ago