2003 GMC Topkick Turbocharger Boost Management
- PPE®Boost Increase ValveGMC Topkick 6.6L 2003, Boost Increase Valve by PPE®. increase your turbo boost pressure from the stock 18-20 psi to 23-25 psi in an easy five minute installation. designed for duramax lb7 diesel engines, the ppe boost increase boost...Increased boost means increased air flowSimple 5 minute Installation$23.39