N75 for S4, RS4! http://cgi.ebay.co.uk/N75-valve-for...arts_Vehicles_CarParts_SM?hash=item3a57d2d54c I'm guessing very! On the subject of N75's if anyone has a standard one kicking about please drop me a PM. (for beer tokens!) Don't think mines working as well as it should, but don't have VAG-COM to log it.