I am new to the site and so far I am really enjoying it. There is lots of good info and tips on here and I hope that I to can contribute to the pile of interesting info. Anyways I do have a question. Is there a way that you can make the turbo "whistle" louder? I love the way it sounds but I just wish it was louder. I have a 2007 LBZ Duramax with the Alison 6-speed. It is a 1-ton 4x4 crew-cab dually. Any info and/or tips would be great.