I have bought my Golf Gti turbo with a atmospheric Bailey d/v already on it, and i read somewhere in this forum that its not doing it any good, and that i should stick to the re-circulating one..is this true, but i noticed i will need another pipe to put a standard valve back on, so was wondering if anyone may have one laying about that would like to sell it to me. At the moment, this d/v is seems to be running alright so im not sure whether to put an re-circulating one back on, or just leave it? I have an AGU engine, and no lights or anything is showing. I have took it to a VW garage to get the ecu checked out, and its showing no faults at all! Any help or suggestions is grately appreciated. thanx