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PPE Boost Increase Valve, Chevy/GMC (2001-04) 6.6L Duramax LB7

The Boost Increase Valve, is designed for 01-04 Duramax LB7 diesel engines, increases boost pressure from 18-20 PSI to 28-30 PSI for additional horsepower and reduces EGT (exhaust gas temperatures). Additional fueling may be needed to gain higher boost levels.

**Note: “Legal in California only for racing vehicles which may never be used upon a highway.”
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