Yamaha EXUP valve

[SaferRides]

I came across this while reminding myself what the U in EXUP stands for. (EXhaust Ultimate Power valve). Mike Armitage is no Kevin Cameron, but it still makes an interesting read. Just don't look at the posts in response!

I've kept the EXUP on the R1. I did wire it open once, but quickly realised it wasn't a good idea for everyday riding.

http://www.r1-forum.com/forums/showthread.php?t=262749

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[husaberg]

I came across this while reminding myself what the U in EXUP stands for. (EXhaust Ultimate Power valve). Mike Armitage is no Kevin Cameron, but it still makes an interesting read. Just don't look at the posts in response!

I've kept the EXUP on the R1. I did wire it open once, but quickly realised it wasn't a good idea for everyday riding.

http://www.r1-forum.com/forums/showthread.php?t=262749

Sent from my SM-S938B using Tapatalk

Jamie James lost an AMA superbike championship when his Exup jammed shut in the last race....
i will see if i can find it
https://www.youtube.com/watch?v=0vUodIwlfeU