ex up valve

[dave05]

hi guys just a quickie I have a fazer 1000 2005 it has the ex up valve taken of . now is this a good thing or bad thanks

[PieEater]

It's a bad thing, the EXUP on the Gen1 improves low to mid range power delivery.

[dave05]

ah right thanks

[ArchDruid]

Better to keep it on, unless you ride using mostly the top half of the rev range  :eek
Reasons as per previous post