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With that said
Upgrading your Cummins with a FASS fuel system is obviously a very popular upgrade
They are even pre-drilled to easily accept a pyrometer probe for EGT monitoring
This boost tube is designed for serious horsepower
ATS Pressure Relief Valve Block Off 04.5-10 GM 6.6L Duramax BPD-90201099 With that saidAll of the 2004. 5 2010 6. 6L Duramax engines 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 aftermarket tuning is 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 fuel rail plug will
