I have a new 07 MS3 GT and I recently installed an AC boost gauge and Greddy type RS BOV. Im new to turbo cars and have a couple questions. On the greddy, the hard and soft setting with the top screw is confusing me, I dont hear or feel much of a difference between the 2, can somebody explain and maybe give an ideal setting. and recently my gauge went off track, when my car is off, it says im boosting 2lbs!! what would cause that, and can i fix it without buying a new gauge( this is already my second one). Thanks in advance