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as they are also exposed to the high pressure fuel being forced through them
The Roost Shield securely attaches to 2
1999-2000 GMC Yukon XL 5
providing you with smooth power delivery and improved throttle response
Industrial Injection Pressure Relief Valve Block Off 01-04 6.6L GM Duramax LB7 ATS-3059003278 as they are also exposedAll of the Common Rail Duramax's feature a relief in the fuel rail which is designed to relieve pressure once it sees roughly 25,000 PSI to avoid damage to the stock injectors. However, most chips and programmers are designed to deliver pressure higher than this, causing the higher pressure fuel to not get to the injectors, losing power, and eventually causing the failure of the stock pressure relief valve. This simple device will block off the relief
