Disable DOD & VVT on Gen 5 GM Engines

Disabling Displacement on Demand (DOD) and Variable Valve Timing (VVT) is crucial when upgrading your Gen 5 GM engine with performance modifications like a camshaft swap. This guide provides a step-by-step process using HP Tuners to ensure your engine runs optimally without these factory features.

⚙️ Why Disable DOD and VVT?

• DOD: Designed to improve fuel economy by deactivating cylinders, DOD can cause issues with aftermarket camshafts and is often removed to enhance performance and reliability.
• VVT: While VVT adjusts cam timing for efficiency, it can interfere with performance cams that require fixed timing. Disabling VVT ensures consistent engine behavior.

🛠️ Required Tools and Equipment

• HP Tuners MPVI2 or MPVI3 interface
• Latest version of VCM Suite
• Aftermarket camshaft compatible with DOD/VVT delete
• DOD delete kit (non-AFM lifters, valley cover, etc.)
• VVT delete components (cam phaser lockout or non-VVT cam gear)
• Appropriate tuning license for your vehicle's ECM

🧭 Disabling DOD in HP Tuners

1. Open VCM Editor.
2. Navigate to Engine > Fuel > Cutoff/DFCO > Cylinder Deactivation.
3. Set DOD Enable to Disabled.
4. Adjust DOD RPM Min/Max to 0.
5. Set DOD MAP Thresholds to 255.
6. Disable related DTCs (e.g., P3400 series) to prevent error codes.

🔧 Disabling VVT in HP Tuners

1. In VCM Editor, go to Engine > Variable Camshaft > VVT Settings.
2. Set VVT Intake Cam Enable to Disabled.
3. Zero out all VVT angle tables (Advance, Retard, etc.).
4. Set Max/Min Angle to 0.
5. Disable related DTCs (e.g., P0010, P0020) to avoid check engine lights.

Note: Ensure that physical components like the cam phaser are properly locked out or replaced to match these software changes.

📌 Additional ECM Adjustments

• Virtual Torque Tables: Update to reflect changes in engine dynamics.
• VE Tables: Retune for accurate airflow modeling.
• MAF Calibration: Adjust for any intake modifications.
• Idle Airflow: Fine-tune for stable idle with new camshaft.
• Torque Management: Modify settings to accommodate increased power.

📥 Request a Base Tune File

At Dirty Dawgs Garage, we offer base tune files tailored for Gen 5 GM engines with DOD and VVT deletes. Our tunes ensure:dirtydawgsgarage.com+3dirtydawgsgarage.com+3dirtydawgsgarage.com+3

• No torque management errors
• Elimination of check engine lights related to DOD/VVT
• Optimized idle and drivability

👉 Contact us at Info@DirtyDawgsGarage.com or call 904-466-4127 to request your tune.

✅ Conclusion

Disabling DOD and VVT is a vital step in unlocking the full potential of your Gen 5 GM engine. By following this guide and ensuring both hardware and software are correctly configured, you can achieve improved performance and reliability.

For more expert tips and services, visit our website at dirtydawgsgarage.com or stop by our shop at 21 Pellicer Ln, St. Augustine, FL 32084.