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Fuel Related | 2011-2016 GM 6.6 Duramax LML

Beginning in model year 2011, GM made some big changes to the Duramax's fuel system. One of the big kickers was the replacement of the long standing, tried and true CP3 injection pump in favor of a lo ... read more

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FASS HPFP Series Adjustable Fuel Pump 01-16 6.6L GM Duramax DDP-FAS-C09-100G-main 0.00 FASS HPFP Series Adjustable Fuel Pump 01-16 6.6L GM Duramax FASS Fuel Systems FAS C09 095G Did you know that your Duramax didn't come from the factory with a lift pump? Upgrade to ensure you're never without proper fueling with a FASS HPFP. PPE Water Level Sensor Wrench 01-15 GM 6.6L GM Duramax PPE-513080000-Main 0.00 PPE Water Level Sensor Wrench 01-15 GM 6.6L GM Duramax PPE (Pacific Performance Eng.) 513080000 Diesel Power Products now sells PPE Water Level Sensor Wrench for 01-15 GM 6.6L Duramax LB7/LLY/LBZ/LMM FASS Fuel Pressure Regulator FPR-1001 DDP-FPR-1001 4.00 FASS Fuel Pressure Regulator FPR-1001 FASS Fuel Systems FPR-1001 Diesel Power Products carries the FASS Fuel Pressure Regulator FPR-1001 Rattlin' Truck & Tractor PushLok Fuel Pressure Sender Tee 3/8" & 1/2" RTT-3818-PLST-Main 0.00 Rattlin' Truck & Tractor PushLok Fuel Pressure Sender Tee 3/8" & 1/2" Rattlin' Truck and Tractor 3818-PLST Diesel Power Products sell the Rattlin' Truck & Tractor PushLok Fuel Pressure Sender Tee 3/8" & 1/2" PPE 513081000 Air Bleeder Screw (Yellow) 01-16 6.6L GM Duramax PPE-513081000 1.00 PPE 513081000 Air Bleeder Screw (Yellow) 01-16 6.6L GM Duramax PPE (Pacific Performance Eng.) 513081000 Replace your soft plastic bleeder screw with PPE’s long lasting billet aluminum, factory replacement, bleeder screw. F-BOMB Diesel Fuel Additive | Fuel Bomb! FB-001-Main 0.00 F-BOMB Diesel Fuel Additive | Fuel Bomb! Fuel Bomb FB-001 Drop an F-Bomb on Bad Fuel Economy! F-Bomb Diesel Fuel Additive is a unique proprietary blend of chemicals to help your diesel run better and cleaner. FASS DMAX-7002 Dura-Max Flow Enhancer Fuel Pump 11-16 6.6L GM Duramax LML DDP-DMAX-7002 5.00 FASS DMAX-7002 Dura-Max Flow Enhancer Fuel Pump 11-16 6.6L GM Duramax LML FASS Fuel Systems DMAX-7002 Its hard to imagine that your LML Duramax didn't come from the factory with a low pressure lift pump, but its true. Fuel Bomb: HELLFIRE +8 Cetane Booster Diesel Fuel Additive FB-002-Main 0.00 Fuel Bomb: HELLFIRE +8 Cetane Booster Diesel Fuel Additive Fuel Bomb FB-002 Diesel Power Product's F-Bomb Diesel Fuel Additive is a unique proprietary blend of chemicals to help your diesel run better and cleaner. Fuel-Bomb | Split case of F-BOMB/HellFire Diesel Fuel Additive (12 Bottles) FB-001_2-Case-Case 12.00 Fuel-Bomb | Split case of F-BOMB/HellFire Diesel Fuel Additive (12 Bottles) Fuel Bomb FB-001/2-Case-Case F-Bomb Diesel Fuel Additive is a unique proprietary blend of chemicals to help your diesel run better and cleaner. Fleetguard FF5320 2 Micron Fuel Filter FF5320 1.00 Fleetguard FF5320 2 Micron Fuel Filter Fleetguard Filters FF5320 Replace your remote fuel filter set up, glacier diesel MK filter set up, or your custom fuel filtration filter with the Fleetguard 2 Micron Fuel Filter FF5320 Fleetguard FS1001 Fuel/Water Separator FS1001 1.00 Fleetguard FS1001 Fuel/Water Separator Fleetguard Filters FS1001 Replace your water separator on your GDP glacier diesel power system, or custom system with the Fleetguard Fuel/Water Separator FS1001 Fleetguard FS1212 Fuel/Water Separator FS1212 1.00 Fleetguard FS1212 Fuel/Water Separator Fleetguard Filters FS1212 Replace your water separator on your GDP glacier diesel power system, or custom system with the Fleetguard Fuel/Water Separator FS1212

Beginning in model year 2011, GM made some big changes to the Duramax's fuel system. One of the big kickers was the replacement of the long standing, tried and true CP3 injection pump in favor of a lower output CP4. This move was derived from their move from the traditional common rail fuel injectors to piezo injectors that technically require less fuel. While we agree that piezo injectors are more efficient than their predecessor, the move to a CP4 has proven to be a bad decision as countless failures have been recorded even on stock trucks, let alone modified trucks that require higher than stock levels of fueling.
Now, compound all of this with the fact that Duramax's have NEVER had a low pressure lift pump supplying fuel to the injection pump and you have some serious room for improvement. We have found that by adding an in line fuel pump will drastically increase the life of the CP4, also allowing those who are adding additional fueling through chips/programmers to realize the full potential of their power. We carry systems from both Pureflow and FASS that will help maintain proper fueling. Both of these systems allow you to choose either a stand alone pump, or a pump with fuel filters and water separators which removes entrained air, reducing the chance of injector failure. And if you'd like to eliminate the failure prone CP4 in favor of a CP3, we offer conversion kits to get the job done to deliver reliability and performance.
Overall, the LML's fuel system has a ton of potential, it just needs some assistance from the aftermarket to made it unstoppable. As always, if you are having any issues determining the right parts for you and your truck, do not hesitate to give us a call or send an e-mail to [email protected] and we would be happy to assist.

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