How to Install an EGR Delete Kit on 2007.5-2010 6.6L Duramax LMM/LBZ

2008 duramax

If you're ready to unlock the full potential of your 6.6L Duramax engine for off-road adventures, an EGR delete is an excellent step. This guide walks you through the installation process for the SPETUNER LMM EGR Delete Kit or LBZ EGR Delete Kit, providing clear, detailed instructions for a smooth and effective upgrade.

Before You Begin: Essential Prep Work

Tools You’ll Need

  • Socket set (8mm, 10mm, 13mm)
  • Flathead and Phillips screwdrivers
  • Pliers and torque wrench
  • Coolant catch pan
  • Gloves and safety goggles

Safety First

  • Disconnect the battery to prevent accidental shorts or sparks.
  • Let the engine cool completely to avoid burns.
  • Work on a flat, stable surface and engage the parking brake.

Pro Tip: Keep all bolts and gaskets organized during disassembly. Trust me, you’ll thank yourself later when reassembly begins.

Step 1: Remove the Air Intake System

Start by accessing the engine bay and creating space for the job.

  1. Loosen the clampssecuring the air intake pipe to the turbo.
  2. Disconnect the mass airflow (MAF) sensor and any attached wiring.
  3. Carefully remove the air filter housing and intake pipe.

Note: Take a good look at your MAF sensor and air filter. If they’re dirty, now is a great time to clean or replace them.

Step 2: Disconnect EGR Components

Coolant Lines and Hoses

  1. Locate the coolant hoses connected to the EGR cooler.
  2. Use pliers to loosen the clamps, then gently pull the hoses off, allowing coolant to drain into your catch pan.

Electrical Connections

  1. Unplug the wiring harness for the EGR valve and position sensors.
  2. Tuck the wires aside to protect them during the rest of the process.

Step 3: Remove the EGR Cooler and Valve

  1. Use a socket wrench to remove the bolts securing the EGR cooler.
  2. Carefully detach the cooler from the engine and inspect the gaskets—keep them if they’re reusable.
  3. Unscrew the bolts holding the EGR valve to the intake manifold.
  4. Remove the EGR valve completely, creating space for the delete kit installation.

Pro Tip: Inspect the turbo inlet and manifold for soot buildup. A quick cleaning here can improve airflow and boost performance.

Step 4: Install the SPETUNER EGR Delete Kit

Install Block-Off Plates

  1. Position the block-off plates provided in the kit over the exhaust and intake ports where the EGR components were removed.
  2. Secure the plates with the included bolts, tightening to the recommended torque specifications.

Attach the High-Flow Intake Elbow

  1. Align the new SPETUNER high-flow intake elbow with the intake manifold.
  2. Use the supplied hardware to bolt it in place, ensuring a tight and leak-free seal.

PCV Reroute (Optional)

If you’re also rerouting the PCV system:

  1. Disconnect the factory PCV hose.
  2. Install the reroute hose and route it safely away from high-temperature components.

Note: A PCV reroute helps reduce oil vapor buildup in the intake system, which is especially useful for off-road use.

Step 5: Reassemble and Final Checks

Reinstall the Air Intake System

  1. Reconnect the air filter housing and intake pipe to the turbo.
  2. Tighten all clamps securely and plug in any disconnected sensors.

Coolant Refill and Leak Check

  1. Refill the coolant reservoir to the appropriate level.
  2. Start the engine and let it idle, checking for any leaks around the block-off plates and hoses.

Reconnect the Battery

Reattach the battery terminals securely, ensuring a good connection.

Step 6: Post-Installation Testing

  1. Start the engine and allow it to run at idle. Listen carefully for any unusual noises.
  2. Perform a visual inspection of all connections, bolts, and hoses.
  3. Take the vehicle for a short test drive. Monitor performance and engine temperature.

Pro Tip: After driving 50-100 miles, recheck all bolts to ensure nothing has loosened from vibration.

Important Legal Considerations

  • Off-Road Use Only: The SPETUNER EGR Delete Kit is designed for vehicles used exclusively in off-road environments, such as racing or agricultural applications.
  • Emissions Compliance: Before proceeding with installation, check your local regulations to confirm this modification is legal in your area.

FAQs

  1. What are the benefits of an EGR delete?

Reduced soot buildup, improved engine efficiency, and better turbo performance.

  1. Will this void my warranty?

In most cases, an EGR delete can void the manufacturer’s warranty. Check with your dealership for specifics.

  1. How long does installation take?

Expect to spend 2-4 hours, depending on your experience level.

Final Thoughts

With your SPETUNER LMM or LBZ EGR Delete Kit installed, your Duramax is now optimized for off-road performance. This upgrade improves reliability, enhances efficiency, and gets you ready for your next adventure.

If you have questions or need additional support, SPETUNER is here to help. Enjoy your newly upgraded Duramax, and happy modifying!

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