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Decreased Engine Noise
6L LLY Duramax 2006 GMC 6
To overcome head gasket failures that can occur in diesel engines in these high performance applications
and potentially harming the injection pump and injectors due to a lack of lubrication
AIRDOG II-5G 220 GPH AIR FUEL SEPARATION LIFT PUMP SYSTEM 15-16 6.6L GM DURAMAX LML LIFT KITS Decreased Engine NoiseWhy GM opted to not include a factory fuel lift pump on all of the early model Duramax's is still a mystery. This lack of consistent fuel pressure coupled with the switch from the proven CP3 to a CP4 injection pump beginning in model year 2011 has spelled disaster on these trucks, especially for those trying to increase the horsepower through performance programmers and or larger displacement injectors. Even at stock power levels, this insufficient
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