guys wanna ask about z800 servo that control the butterfly valve in the exhaust...does the servo rotates when we throttle up..or is is controlled by a certain rpm then it open fully? i just installed back the original exhaust..before this used arrow gp2 slipon...so this is the first time of me using that standard exhaust so i got no experience on how it should sound like....thanks

yes i know it moves a bit...but doesit rotate more after the rpm gets higher or just stays static like that?