Hi.
I would like to know who sells oil feed to turbo restrictor for VF34 turbo?
It's something like Garrett ball bearing turbos have...
And couldn't find do Subaru with stock VF34 has oil feed restrictor at turbo or at engine block or on the oil feed line?

 

Its not a restrictor as such, the banjo bolt that goes into the cylinder head and feeds oil to the turbo has a different size hole in it depending on whether the car came with a VF turbo (STis) or TD(the rest). Banjo bolt on STis has a 1mm hole in it as the bearings are generally roller in VFs so don't like being flooded with oil, TDs use a sleeve so need a lot of oil in comparison to keep the shaft "floating" in the sleeve bearing.

 

try ROGER CLARK MOTORSPORT TEL: 01455 828610 8.30-18.00 GMT. they can supply the banjo bolts for my VF24 and guess they would be the same for your VF34.
The STU 21 are £14.65 each and the STU 18 are £7.01 each

hope this helps