Yes, you heard us. PPE's Release Valve Shim Kit is now 50-state legal! PPE's Release Valve Shim Kit has achieved an Executive Order by the California Air Resource Board (CARB). The PPE Release Valve Shim Kit is now CARB-legal for use on 2004.5-2010 6.6L Duramax diesel engines (LLY/LBZ/LMM) and 2008-2010 6.7L Cummins diesel engines vehicles in all 50 States.
The Release Valve Shim Kit increases the pressure needed to “pop off” the pressure relief valve (PRV). This means that the available fuel rail pressure remains high, as requested by the engine computer during full-throttle driving. It reduces the fuel flow through the fuel return system that's the result of an age-weakened spring.
It eliminates potential low fuel rail pressure DTC codes P1093 or P0087 (low fuel rail pressure during power enrichment) that are caused by insufficient pressure relief valve spring pressure opening, returning fuel to the fuel tank.
For more information, call 714-985-4825 or click here.