2001-2004 LB7 6.6L Duramax Applicable Products

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While Federal LB7s do not have EGR, California models do. For those equipped models, the EGR Delete Kit removes the exhaust gas recirculation system, improving engine performance by allowing cooler, denser air into the combustion chamber, which also reduces carbon build-up.

These modifications typically improve fuel efficiency by reducing engine restrictions, allowing for better airflow and combustion, especially when combined with proper tuning.

Passing state inspections can be difficult with these modifications, especially if emissions testing is required, so it's crucial to understand your local requirements.

Regular checks should be performed during routine maintenance, including inspecting for leaks, ensuring secure connections, and cleaning components as needed.

If a check engine light appears, it could be related to the modifications. A diagnostic tool can help pinpoint the issue, and you may need to adjust the tune or check installation steps.