OK, thanks.It's the vacuum sensor/actuator for the acoustic valve
Nothing left of airbox, so probably can take off, will get picture tomorrow, thanks.Tbh if the airbox has been replaced the acoustic valve has probably been removed too, drop a picture on here mate and I'll tell you
But tbh you can remove the whole lot and just cap off the vacuum line. It's only to reduce induction noise
In standard form, theres a vacuum pipe from the plenum to that valve, and then a pipe from there to the acoustic valve. Probably been left plugged into the electrics due to it bringing a engine light on when unplugged.