What's this then?

[KERRSURF]

My thoughts were it's maybe a dump valve, it's fitted to the turbo plenum. It has a single hose threaded into the rear of it. The whole assembly is screwed into the plenum and if we delete it it will need blanking off.

So, is it a dump valve?
Where dose the black hose go?
Is anything missing?

There is another threaded hole in the rear of unit with nothing fitted into it at the moment.

[BUSHWHACKER]

Could be a blow off (Dump) valve, but a recirculating type not the 'pishhhhhhh' type.

Can you unscrew it and look inside?

[KERRSURF]

Yes, nothing much to see, just a shallow recess. I can take better pics tomorrow if you like.

[KERRSURF]

Bugger! Forgot to get pics. Yoshie, nip oot and get some pics.

[tweak'e]

its a bov, you can see the mesh vent at the bottom.
they need vaccum in the small hose to trigger. you would have to rig a vsv to fire it and trigger the vsv with switches on the throttle/clutch.

[KERRSURF]

Ill post better pics.
Probably best just to delete it.