Hey guys just looking for a little advice. I have a mk4 golf 1.8t it's an 03plate aum engine code. I want to put a dump valve on it do I can have the whoosh sound but I know these kind of DVs give the aum engine problems. I heard that it's possible to run 2 DVs at the same time ?? Could I keep the stock DV on the car and also have an atmospheric DV located somewhere else? Any help on this would be really appreciated.