You might be getting a blanking plate mixed up with the recirc valve mate. A blanking plate replaces the recirc valve to allow you to fit a DV. The recirc is bolted to the side of the turbo with 3 10mm bolts and is a pig to get off. Remove it, pull the rubber disk off (spring will come with it) stick 2p in the bit where the spring sits and put it all back on.
I'm struggling to get the bark every time, it seems to only do it at 3/4 boost under certain circumstances. I think I needed another 2p lol.
The other option is to fit a one way valve in the pipe that operates the recirc valve, then you get this noise...
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