Quote:
Originally Posted by 7Defcon
I believe the ones that recirculate are called Diverter valves. I had a plastic one on my 1.8T A4 B6. I'm thinking of changing the one on my 2 to something with more noise like a Blow off valve, which is the one that releases into the atmosphere.
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All of them are essentially the same attempting. Recirculation and venting to atmosphere are settings. Factory cars have adopted the term diverter valve for the unit while the aftermarket almost always called them Blow off valves. Either way, they are the same and have the same purpose. I don't mean to harp on this too much, but I have been asked this question to the point of me having to pull out a factory "diverter valve" and a "blow off valve" to prove to a friend that they were literally the exact same.