BD Diesel Turbo Boost Control for 2001-2004 GM Duramax LB7 Diesel. When a BD X-orifice or other similar product is used to increase turbo boost, that extra performance potential can be wasted if the weak factory wastegate opens prematurely. GD's heavy duty wastegate is the solution by increasing turbine speed and decreasing drive pressure. It bolts up to your factory turbo and is adjustable, so you can set the desired boost level, and hold it. BD Diesel 1047160 Turbo Boost Control 2001-2004 Duramax LB7 1047160APPLICATIONS:: 2001-2004 DURAMAX LB7 We welcome CANADIAN customers! For ordering information, click on "Orders To Canada" at the top left side of this page. PAYMENT METHODS: PayPal, Visa, Mastercard, Discover, American Express, money orders.