Cummins diesel owners frequently seek performance and reliability upgrades, leading to the popularity of EGR deletes․ This modification addresses common issues and enhances engine capabilities․

Many enthusiasts choose kits like those from EGRdeletehome, ensuring complete installation components․ Proper installation, often detailed in videos, is crucial for optimal results․

The 6․7L Cummins EGR delete aims to improve engine health, offering benefits like increased horsepower and reduced maintenance, while addressing emissions concerns․

Why Delete the EGR?

The Exhaust Gas Recirculation (EGR) system, while designed for emissions control, often presents challenges for 6․7 Cummins owners․ A primary reason for deletion is to combat the system’s inherent reliability issues, as it’s prone to carbon buildup and failure․ This buildup restricts exhaust flow, leading to reduced engine performance and potential damage․

Deleting the EGR can significantly improve engine longevity by eliminating a common source of mechanical problems․ Furthermore, it allows for increased airflow, resulting in noticeable gains in horsepower and torque․ Many owners report improved fuel economy post-deletion, alongside a smoother driving experience․

Ultimately, the decision to delete often stems from a desire for a more dependable and powerful engine, free from the constraints of a problematic emissions component․ It’s a popular choice for those prioritizing performance and minimizing maintenance downtime․

Benefits of an EGR Delete

An EGR delete unlocks several performance enhancements for the 6․7 Cummins engine․ Owners frequently experience a noticeable increase in horsepower and torque, resulting in improved acceleration and towing capacity․ Reduced turbo lag is another common benefit, providing a more responsive driving experience․

Beyond performance, an EGR delete contributes to improved engine health․ Eliminating carbon buildup within the intake manifold and cylinders leads to cleaner combustion and reduced wear․ This translates to increased engine longevity and fewer maintenance requirements over time․

Furthermore, deleting the EGR can positively impact fuel economy, as the engine operates more efficiently without the restrictions imposed by the system․ It’s a comprehensive upgrade for those seeking a more reliable, powerful, and efficient diesel engine․

Legality and Emissions Regulations

EGR deletes carry significant legal implications, varying considerably by location․ Federal regulations generally prohibit removing emissions control devices like the EGR system on vehicles used on public roads․ State and local laws often mirror these federal guidelines, with strict enforcement and potential penalties․

It’s crucial to understand that an EGR delete may render a vehicle non-compliant for emissions testing, leading to failed inspections and potential fines․ Off-road use is often the only legally permissible application for modified vehicles․

Before undertaking an EGR delete, thoroughly research and understand the specific emissions regulations in your area․ Compliance is paramount to avoid legal repercussions and ensure responsible vehicle ownership․

Understanding the 6․7 Cummins EGR System

The 6․7L Cummins EGR system recirculates exhaust gases, reducing NOx emissions․ Understanding its components – valve, cooler, and piping – is vital before a delete․

EGR System Components

The 6․7L Cummins EGR system comprises several key components working in unison․ The EGR valve itself controls the flow of exhaust gas back into the intake manifold․ Crucially, the EGR cooler reduces the temperature of these recirculated gases, preventing excessive heat buildup․

Connecting these is a network of EGR pipes, including the hot and cold side, facilitating gas transfer․ The turbo intake horn and PCV hose are also closely associated, requiring disconnection during a delete․ Furthermore, heat shields protect surrounding components from the intense temperatures generated․

Understanding the location and function of each part – from the fixed hose connector to the intake elbow – is essential for a successful EGR delete installation․

How the EGR System Works

The EGR system functions by recirculating a portion of exhaust gas back into the engine’s intake․ This process lowers combustion temperatures, significantly reducing the formation of nitrogen oxides (NOx), a harmful emission․ The EGR valve, controlled by the engine’s computer, regulates the amount of exhaust gas reintroduced․

Exhaust travels through the EGR pipes and is cooled by the EGR cooler before entering the intake manifold․ This cooled exhaust mixes with fresh air, diluting the oxygen concentration and lowering peak combustion temperatures․

However, this recirculation can lead to carbon buildup, restricting airflow and potentially causing performance issues․ Removing the system, as with an EGR delete, bypasses this process․

Common EGR System Failures

6․7 Cummins EGR systems are prone to several failures, often stemming from carbon buildup due to exhaust gas recirculation․ A frequent issue is a stuck-open EGR valve, causing poor engine performance, excessive smoke, and potential stalling․

The EGR cooler is susceptible to cracking and leaking coolant into the exhaust system, leading to white smoke and potential engine overheating․ Clogged EGR pipes restrict exhaust flow, increasing backpressure and reducing engine efficiency․

These failures necessitate costly repairs and downtime․ Consequently, many owners opt for an EGR delete to eliminate these recurring problems and enhance engine dependability, focusing on preventative maintenance․

Tools and Materials Needed for EGR Delete

EGR delete requires standard mechanics tools, plus potentially specialized items like EGR delete kits from vendors like Flasharks․ Torque wrenches are essential for proper installation․

Required Tools List

Successful 6․7 Cummins EGR delete installation demands a comprehensive toolkit․ Essential items include a socket set (metric), wrenches, screwdrivers (various types), and pliers․ A torque wrench is absolutely critical for securing components to manufacturer specifications, preventing leaks and ensuring longevity․

Beyond the basics, consider a coolant drain pan, penetrating oil (for stubborn bolts), and potentially an exhaust pipe cutter if modifications are needed․ Safety glasses and gloves are non-negotiable for personal protection․ Diagnostic tools, like a code reader, can assist with post-installation checks․

Depending on the kit, specialized tools might be recommended․ Access to a lift or jack stands can greatly simplify the process, providing ample working space․ Having a helper can also be beneficial for certain steps․

EGR Delete Kit Options

Several EGR delete kit manufacturers cater to the 6․7 Cummins market, each offering varying features and price points․ Flasharks Premium kits emphasize precision engineering and complete component sets․ EGRdeletehome provides comprehensive kits designed for ease of installation and full functionality․

Kits generally include EGR valve and cooler delete plates, necessary gaskets, and hardware․ Some kits bundle a CCV (Crankcase Ventilation) delete or relocation kit, addressing another common modification․ Premium options may feature stainless steel construction for enhanced durability․

Consider your budget and desired level of completeness when selecting a kit․ Researching customer reviews and comparing kit contents is crucial before making a purchase․ Ensure the kit is specifically designed for your truck’s year and model․

Additional Parts and Supplies

Beyond the core EGR delete kit, several additional parts and supplies streamline the installation process and ensure a complete modification․ High-quality gaskets are essential for leak-proof sealing of the EGR delete plates and related components․ Torque wrenches are critical for achieving proper fastener tightness, preventing damage․

Penetrating oil aids in loosening stubborn bolts, particularly those on the EGR valve and cooler․ A coolant drain pan is necessary for safely collecting coolant during cooler removal․ Depending on the kit, you might need additional hose clamps or fittings․

Consider a CCV kit if not included in the EGR delete package, and always have thread sealant on hand․ Proper preparation with these supplies ensures a smoother, more reliable installation․

Step-by-Step EGR Delete Installation

Begin by disconnecting the battery for safety․ Remove the oil dipstick and cover, then carefully disconnect the EGR pipe and valve housing, following detailed instructions․

Step 1: Disconnecting the Battery

Before commencing any work on your 6․7 Cummins engine, prioritizing safety is paramount․ The very first step in the EGR delete installation process involves disconnecting the vehicle’s battery․ This crucial precaution prevents accidental electrical shorts or damage to sensitive electronic components during the procedure․

Locate the negative terminal of your battery – typically marked with a (-) symbol․ Using an appropriately sized wrench, carefully loosen the nut securing the negative cable clamp․ Once loosened, gently remove the cable from the terminal, ensuring it doesn’t accidentally make contact again․ Secure the disconnected cable away from the battery terminal to prevent accidental reconnection․ This simple step safeguards both you and your vehicle’s electrical system throughout the EGR delete process․

Step 2: Removing the Oil Dipstick and Cover

With the battery safely disconnected, the next stage of the 6․7 Cummins EGR delete installation focuses on accessing the EGR valve and cooler․ This requires removing obstructions, starting with the oil dipstick and its associated cover․ Begin by carefully pulling the oil dipstick straight up and out of its tube, noting its original position for re-installation later․

Next, locate the oil dipstick cover, typically secured with bolts or clips․ Remove these fasteners and gently lift the cover away, exposing the area beneath․ This provides necessary clearance for maneuvering tools and removing the EGR components․ Take care not to damage the cover or surrounding areas during removal, ensuring a smooth re-installation process later on․

Step 3: Disconnecting the EGR Pipe

Having removed the oil dipstick and cover, attention shifts to disconnecting the EGR pipe, a crucial step in the 6․7 Cummins EGR delete installation․ Begin by loosening the clamps securing the EGR crossover tube on both the intake side and the EGR valve itself․ Carefully twist and pull the tube to break the seal, avoiding forceful maneuvers that could damage the components․

Once loosened, fully disconnect the EGR pipe from both ends․ Be prepared for some residual coolant or oil to leak out, having a drain pan readily available․ This step opens up access to the EGR valve and housing, preparing for their removal․ Ensure all clamps and connections are inspected for damage before proceeding․

Step 4: Removing the EGR Valve and Housing

With the EGR pipe disconnected, the next phase involves removing the EGR valve and its associated housing from the 6․7 Cummins engine․ Begin by disconnecting any remaining electrical connectors attached to the EGR valve itself․ Then, carefully unbolt the EGR valve from the intake elbow, noting the location of each bolt for reassembly if needed․

Once unbolted, gently remove the EGR valve․ Next, address the EGR housing, unbolting it from the engine block․ Be mindful of any remaining coolant lines or brackets attached to the housing․ Carefully lift the entire EGR assembly away, ensuring no components are left behind․

Step 5: Removing the EGR Cooler

Following EGR valve and housing removal, attention shifts to detaching the EGR cooler․ Begin by disconnecting the coolant hoses connected to the cooler, preparing for potential coolant spillage – have a drain pan ready․ Next, remove the hot-side pipe heat shield and disconnect it from both the EGR valve and the cooler itself․

Unbolt the EGR cooler from its mounting points, typically located near the turbo intake horn and PCV hose․ Carefully maneuver the cooler to access and disconnect any remaining hoses or electrical connections․ Once fully detached, carefully remove the EGR cooler from the engine bay, ensuring no damage occurs to surrounding components․

Step 6: Installing the EGR Delete Kit

With the EGR system removed, begin installing the EGR delete kit․ Start by installing the fixed hose connector, ensuring a secure fit․ Then, carefully install the EGR delete pipe, aligning it with the mounting points previously occupied by the EGR valve and cooler․

Secure the delete pipe using the provided hardware, tightening bolts to the manufacturer’s specified torque specifications․ Reconnect any necessary hoses or brackets, ensuring proper alignment and secure fastening․ Double-check all connections to prevent exhaust leaks post-installation․ Kits like those from Flasharks Premium are designed for precise fitting․

Post-Installation Procedures

Following the EGR delete, reconnect components, verifying proper fit․ Torque all fasteners to specifications and meticulously check for any exhaust leaks to ensure optimal performance․

Reconnecting Components

After the EGR delete kit is securely installed, carefully reconnect all previously disconnected components․ This includes the turbo intake horn and PCV hose, ensuring tight and secure fittings to prevent leaks․ Pay close attention to the hot side pipe, reattaching the heat shield for thermal protection․

Double-check all hose clamps and connections, verifying they are properly tightened․ Reinstall the oil dipstick and cover, ensuring a snug fit․ It’s vital to confirm that all sensors and wiring harnesses are reconnected correctly, avoiding any interference with engine operation․ A thorough visual inspection is recommended to guarantee everything is back in its place before proceeding․

Proper reconnection is crucial for a smooth and reliable post-installation experience․

Torque Specifications

Precise torque specifications are paramount during the EGR delete installation to ensure proper sealing and prevent component damage․ Refer to the EGR delete kit’s instructions, as values can vary between manufacturers like Flasharks and ECO DIESEL․ Generally, bolts securing the EGR valve and cooler require specific torque settings․

The EGR crossover tube connections also demand accurate tightening․ Consult a reliable service manual or online resources for the correct torque values for your 6․7L Cummins engine․ Using a calibrated torque wrench is essential for achieving these specifications․

Incorrect torque can lead to exhaust leaks or component failure, so meticulous attention to detail is crucial․

Checking for Leaks

Post-installation, thoroughly inspect the EGR delete area for any exhaust leaks․ Start the engine and carefully listen for hissing sounds, particularly around the EGR cooler removal site and the EGR delete kit’s mounting points․ A visual inspection is also crucial; look for soot deposits indicating escaping exhaust gases․

A common area for leaks is the EGR crossover tube connection․ Use a soapy water solution sprayed onto the connections while the engine is running to identify bubbles, revealing leak locations․

Address any leaks immediately by re-tightening bolts to the specified torque or replacing gaskets as needed․ Ignoring leaks can lead to performance issues and potential engine damage․

Tuning and Programming After EGR Delete

Custom tuning is essential post-EGR delete to optimize performance and prevent engine damage․ Select a reputable tuning solution and upload the appropriate tune․

Proper programming ensures the engine control module adapts to the modified exhaust system, maximizing benefits and avoiding operational issues․

Importance of Custom Tuning

Custom tuning is absolutely critical following a 6․7 Cummins EGR delete; it’s not merely an optional step, but a necessity for safe and optimal engine operation․ Deleting the EGR system fundamentally alters the engine’s airflow and combustion process, requiring the engine control module (ECM) to be recalibrated․

Without a custom tune, the ECM will continue to operate as if the EGR system is still in place, leading to a variety of problems․ These can include increased soot production, reduced fuel efficiency, and potentially even engine damage due to improper air-fuel ratios․ A properly calibrated tune adjusts parameters like fuel delivery, timing, and boost pressure to match the new configuration․

Furthermore, custom tuning allows you to unlock the full performance potential of your Cummins engine, maximizing horsepower and torque gains achieved by the EGR delete․ It also ensures compliance with emissions regulations where applicable, by optimizing the engine’s operation within acceptable parameters․

Selecting a Tuning Solution

Choosing the right tuning solution for your 6․7 Cummins EGR delete is a crucial decision impacting performance and reliability․ Several options exist, ranging from pre-loaded tunes to fully custom calibrations․ Pre-loaded tunes offer convenience and affordability, but may not be optimized for your specific modifications․

Custom tuning, performed by a qualified diesel performance specialist, provides the most tailored solution․ These tuners can adjust parameters based on your truck’s setup and desired driving style․ Popular tuning platforms include HP Tunters and EFI Live, requiring compatible hardware and software․

Consider factors like tuner reputation, support availability, and the level of customization offered․ Ensure the tune is specifically designed for an EGR-deleted Cummins engine to avoid compatibility issues․ Researching online forums and seeking recommendations from other truck owners can also guide your selection․

Uploading the Tune

Uploading the selected tune to your 6․7 Cummins requires a compatible tuning device connected to the vehicle’s diagnostic port․ Follow the manufacturer’s instructions carefully, as procedures vary between tuning platforms like HP Tuners or EFI Live․ Ensure your truck’s battery is fully charged to prevent interruptions during the process․

Typically, you’ll navigate the tuning device’s interface to locate and select the appropriate tune file․ The device will then communicate with the engine control unit (ECU), writing the new calibration․ Avoid disconnecting the device or turning off the ignition during this process․

Once the upload is complete, verify the tune has been successfully applied․ Some devices offer a verification step․ After uploading, it’s recommended to perform a test drive to monitor engine performance and ensure everything functions correctly․

Crank Case Ventilation (CCV) Considerations

Following an EGR delete, addressing the CCV system is vital․ Options include a CCV delete or relocation kit, preventing oil contamination and maintaining optimal engine health․

CCV Delete or Relocation

After performing a 6․7 Cummins EGR delete, the Crank Case Ventilation (CCV) system requires attention․ Many owners opt for a CCV delete or relocation, as the factory system can contribute to oil accumulation in the intake․ A CCV delete completely removes the system, while relocation redirects the vented gases to the ground․

Choosing between these options depends on individual preferences and local regulations․ A delete simplifies the system, eliminating potential failure points, but may not be street legal in all areas․ Relocation offers a compromise, maintaining some functionality while mitigating oil buildup․ Kits are readily available, providing all necessary components for a straightforward installation․ Proper sealing is crucial to prevent leaks and ensure effective ventilation․

Consider the potential impact on emissions and long-term engine health when making your decision․

CCV Kit Installation

Installing a CCV kit typically involves removing the factory CCV components and replacing them with the kit’s parts․ Begin by disconnecting the CCV hose from the valve cover and intake․ Then, remove the factory CCV filter and associated brackets․

Next, install the new CCV filter, ensuring a secure fit․ Connect the new hose from the filter to the valve cover, and route it appropriately․ For relocation kits, carefully position the vent outlet away from exhaust components․ Tighten all connections to prevent leaks, utilizing the provided clamps and fittings․

Double-check all connections and ensure proper routing before proceeding․ A correctly installed CCV kit will effectively manage crankcase pressure and minimize oil contamination․

Troubleshooting Common Issues

Common post-delete problems include the Check Engine Light (CEL), exhaust leaks, and performance dips․ Proper tuning and leak checks are vital for resolution․

Address CEL codes with a scanner, verify exhaust system tightness, and ensure correct tune uploading for optimal engine function․

Check Engine Light (CEL)

Following a 6․7 Cummins EGR delete, encountering a Check Engine Light (CEL) is common, primarily due to the system expecting EGR functionality․ This isn’t necessarily indicative of a mechanical failure, but rather a signal that the vehicle’s computer hasn’t been properly reprogrammed․

Crucially, a custom tune is essential to disable EGR-related diagnostic trouble codes (DTCs)․ Without a tune, the CEL will persist, and the engine may experience reduced power or operational limitations․ Utilize a diagnostic scanner to identify the specific DTCs triggered․

Ensure the selected tuning solution specifically addresses EGR deletion for your 6․7 Cummins engine․ Re-check connections and verify the tune upload was successful․ If the CEL remains after tuning, consult with a qualified diesel performance specialist․

Exhaust Leaks

Post-installation of a 6․7 Cummins EGR delete, carefully inspect the exhaust system for leaks․ These can occur at the connections where the EGR delete kit components interface with the existing exhaust piping․ Leaks manifest as a hissing or chugging sound, particularly during acceleration․

Thoroughly check all flanges and clamps, ensuring they are properly tightened to the manufacturer’s specified torque․ Use a quality exhaust sealant on flange surfaces to create an airtight seal․ Soot accumulation near joints is a visual indicator of a leak․

Address any leaks promptly, as they can reduce engine performance, decrease fuel efficiency, and potentially introduce exhaust gases into the cabin․ A smoke test can help pinpoint the exact location of elusive exhaust leaks․

Performance Issues

Following a 6․7 Cummins EGR delete, some performance issues may arise if the engine isn’t properly tuned․ A delete alone often triggers a Check Engine Light (CEL) and can result in reduced power and drivability․ Custom tuning is essential to recalibrate the engine control module (ECM) for optimal operation․

Symptoms include sluggish acceleration, decreased fuel economy, and potential engine stumbling․ Ensure the chosen tuning solution is specifically designed for your truck’s year, make, and modifications․ Incorrect tuning can lead to engine damage, so selecting a reputable tuner is vital․

Verify the tune is uploaded correctly and that all related sensors are functioning as expected․ A professional dyno tune can maximize performance gains and ensure engine safety․