The 6.7 Cummins engine is a powerhouse, known for its torque and reliability. But many owners want to push the boundaries even further, unlocking hidden potential through tuning and deleting emissions systems. This guide explores the world of 6.7 Cummins tuning with deletes, addressing common questions and concerns. We'll delve into the benefits, risks, and considerations involved in this popular modification. Disclaimer: Modifying your vehicle's emissions system may be illegal in your area. Always check local regulations before proceeding.
What are Deletes?
"Deletes" refers to removing or disabling the vehicle's emissions control components. This typically includes the diesel particulate filter (DPF), selective catalytic reduction (SCR) system, and exhaust gas recirculation (EGR) system. These components are designed to reduce harmful emissions, but they can also restrict engine performance and lead to costly repairs. Removing them allows for more efficient airflow and combustion, resulting in increased power and potentially improved fuel economy.
What are the Benefits of Tuning a 6.7 Cummins with Deletes?
Many owners opt for tuning and deletes for a range of reasons:
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Increased Horsepower and Torque: Removing emissions restrictions and optimizing fuel delivery via tuning significantly increases horsepower and torque output. This translates to better towing capacity, quicker acceleration, and an overall more responsive driving experience.
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Improved Fuel Economy (Potentially): While not always guaranteed, deleting emissions components can lead to improved fuel economy, particularly when combined with a well-calibrated tune. This is because the engine is no longer working against the backpressure created by the DPF and other emission systems.
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Reduced Regeneration Issues: The DPF requires periodic regeneration cycles, which can impact performance and fuel economy. Deleting the DPF eliminates these issues altogether.
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Enhanced Engine Sound: Deleting the DPF often results in a more aggressive and throatier exhaust note, a desirable characteristic for many truck enthusiasts.
What are the Risks of Tuning a 6.7 Cummins with Deletes?
While the benefits are enticing, there are potential downsides to consider:
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Increased Emissions: The most obvious risk is increased emissions of pollutants. This can contribute to air pollution and may violate environmental regulations.
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Voiding the Warranty: Modifying your engine's emissions system almost certainly voids any remaining factory warranty.
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Potential Engine Damage: An improperly calibrated tune can cause significant damage to the engine, leading to costly repairs.
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Legal Ramifications: As previously mentioned, modifying emissions systems is illegal in many jurisdictions. Penalties can include fines and even vehicle impoundment.
How Much Does it Cost to Tune a 6.7 Cummins with Deletes?
The cost varies significantly depending on the type of tuner, the installer, and the specific modifications made. Expect to pay several hundred to several thousand dollars for a complete tune and delete package. This includes the cost of the tuner itself, the delete pipes and components, and labor for installation.
What Kind of Tuner Should I Use?
Choosing the right tuner is crucial. Reputable tuners offer custom tunes tailored to your specific needs and driving style. Research different tuners and read reviews before making a decision. Pay attention to the tuner's reputation and customer support.
Can I Do it Myself?
While some technically inclined individuals may attempt to perform the modifications themselves, it's generally recommended to have a professional perform the installation. Improper installation can lead to damaged components and even injury.
Is it Worth it?
Whether tuning and deleting your 6.7 Cummins is worthwhile depends on your individual priorities and circumstances. Weigh the potential benefits against the risks and costs before making a decision. Consider your local regulations, your budget, and your tolerance for risk. If done correctly and responsibly, tuning can greatly enhance the performance of your truck. However, always prioritize safe and legal modifications.
