you HAVE to have an aftermarket recirc one whatever you do, as its audi management. if it was dta you could go to atmospheric dv straight away. you gotta ask, is it worth ripping all old wires out and putting in a dta box just to have the DV noise? Its f**king cool though
this is going to be difficult to describe but is the recirculating one, the one that sounds a bit like a quick tchf tchf tchf if you get what i mean