My car has an overboost issues that is being repaired. But since I'm in a foreign country, there is a slight language barrier.

The mechanic is saying something about a "pressure connection" being missing from the passenger turbo. I thought he meant the wastegate, but that's not it. He said he's never seen this before and perhaps the "screw was not blocked". I asked if there could be turbo damage as a result and he said "the turbos don't like it at all".

Can anyone decipher what he's talking about, and what the issue is?

Thanks.