XDP carries the PPE 116030000 Boost Increase Valve that will increase your turbo boost pressure from the stock 18-20 to 23-25 psi in an easy five minute installation. Designed for 2001-2004 Duramax LB7 diesel engines, the PPE 116030000 Boost Increase Valve will not only produce additional horsepower and torque but it will also reduce those dreaded EGTs. Additional fueling via a PPE Xcelerator programmer may be needed to gain higher boost levels.