Flyin' Diesel Performance - Turbo Charger Kits

This kit will allow you to install an S300 based Turbo on your 2004.5-2005 LLY Duramax. Replacing all of the OEM plumbing and 2 piece y-bridge with high flow 3" diameter piping and one piece Y-bridge. Oil Lines are high quality stainless steel braided Parker Lines with the oil feed line routing from the main oil galley on the side of the engine block. We designed our down pipe to connect with your exhaust system V-Band and clamp which simplifies installation and does not require you to cut your exhaust system. If you are not purchasing the turbo from us you must specify the brand of turbo you are using, some Turbo's you may be required to ship to use for mock up to build the kit. Each turbo kit is hand built in house by our experienced fabricators and welders. Every part is built and test fit on an engine to ensure proper fitment.
Includes Driver Side Transmission Dipstick Tube which makes installation of the down pipe easier.

***NOTE: Our down pipe is HX40 style flange connection at the turbo as this style offers the best seal, alignment, and easiest install. If you are not purchasing the turbo from us you will need to make sure your exhaust housing is machined to HX40 style outlet flange! Note picture above for HX40 flange vs full marmon standard style.

This kit will allow you to install an S400 based Turbo on your 2001-2004 LB7 Duramax. Replacing all of the OEM plumbing and y-bridge with high flow 3" diameter piping. Oil Lines are high quality stainless steel braided Parker Lines with the oil feed line routing from the main oil galley on the side of the engine block. We designed our down pipe to connect with your exhaust system V-Band and clamp which simplifies installation and does not require you to cut your exhaust system. You can upgrade to the 3 1/2" down pipe but this will require cutting of the exhaust system to install. If you are not purchasing the turbo from us you must specify the brand of turbo you are using, some Turbo's you may be required to ship to use for mock up to build the kit. Each turbo kit is hand built in house by our experienced fabricators and welders. Every part is built and test fit on an engine to ensure proper fitment.
Includes Driver Side Transmission Dipstick Tube which makes installation of the down pipe easier.

Turbo Down pipe is designed for Half Marmon style S400 exhaust outlet; 4.6" Diameter flat flange.

Compound Turbo Kits (also known as Twin Turbo Kits) for the 2004.5-2005 LLY Duramax have become one of the most popular upgrades for daily drivers and towing rigs. Compounding over your factory turbo charger has been proven to provide cooler EGT?s and increased power across the rpm range, all while allowing the use and function of the factory turbine brake feature. They are a great all around setup for towing, the weekend warrior, and truck pulling competition, or racing. With proper tuning (Required) and additional supporting modifications the Compound Turbo Kit can provide up to 750 HP and 1400 LBS of torque.

One of the nicest features of compounding over your factory turbocharger is that the truck will not have any additional turbo lag or loss of spool up, which is common with a larger single turbo upgrade. The truck will have instant response and boost just as it does with only the factory turbo, but more efficient across a wider range, with cooler EGT?s! Every WCFab Turbo kit is hand built in house by our experienced fabricators and welders. Every component is built and test fit on our jigs to ensure proper fitment. All tubing is TIG welded and the mating flanges are CNC machined with O-ring seals where necessary for a boost-leak free setup. We stand behind our fabricated components and workmanship for the life that you own the product. The Compound Turbo Kit comes with all the necessary components to install, with several upgrades and turbo options available. Powder coating is included in the price. Certain upgrades are necessary for optimum performance and drivability. (I.E- Tuning and FASS Lift Pump)

Compound Turbo Kits (also known as Twin Turbo Kits) for the 204.5-2005 LLY Duramax have become one of the most popular upgrades for daily drivers and towing rigs. The s300/S400 Kit replaces the factory VGT turbo charger with a stronger, more robust fixed vane type S300 Turbo. Properly spec'd setups can operate very well at lower horsepower ratings and still tow extreme weights. But you also have the option to push the horsepower level to over 1000 RWHP. (with proper supporting modifications) Kits are available without turbo chargers but we will need to know what you are planning to use, and in some cases, may need your turbos sent in for the build process. Below we have spec'd out a few popular choice option kits;
1. Daily Driver, Heavy Towing Combination- S364.5 SXE with .83 Turbine Housing paired with a S475 Engineered Turbo Billet Wheel Low Pressure turbo and 1.15 Turbine Housing. This setup works best in the 400HP-700HP Daily Driver, Heavy Towing Combination. This combo is capable of towing loads in the 15-18,000 Range and can still be turned up to lay down 700HP. With the addition of an internally waste gated .83 Turbine Housing for the S300 Turbo, the kit can be pushed to the 750HP range.
2. Daily Driver, Mild Towing Combination- S366 SXE with .90 Turbine Housing paired with a S480 FMW (or Engineered Turbo) Low Pressure turbo and 1.32 Turbine Housing. This combo will operate well in the 500-850HP Range and is still capable of towing upwards of 15,000lbs with correct driving techniques. Adding the .83 internally waste gated housing is a good choice if you do plan to tow heavy but also want to push the 800HP Range.
3. Daily Driver, Racer, Light Towing Combination- S369 SXE with .90 turbine housing paired with a S484 Engineered Diesel Billet Wheel Low Pressure turbo and 1.32 turbine housing. Are you a weekend warrior drag racer that still have a boat to tow? This is the setup for you. With supporting modifications, this combination will break 1000 RWHP but is still very well capable of towing 12,000 lbs. Highly modified engine lower end would be necessary as well as serious fuel upgrades to make 1000 HP, but this setup is a great, street able, daily driver that can impress when needed.