How to Do a 6.7 Cummins CCV Reroute or Delete

Oil from the CCV system builds up in our 6.7 Cummins intake. It damages the turbo and causes service messages. The easy way to fix it is to do a CCV delete or reroute to improve engine cleanliness and increase airflow.

We remove the CCV filter and add a bypass plate with a vent hose. This reroutes crankcase vapors away from the turbo. It takes two to three hours. We get no more oil gunk and better turbo life.

Ready to install a 6.7 Cummins CCV reroute or delete? This instruction shows the required parts and installation steps. It also covers CCV house routing, maintenance tips, and legal considerations before performing a 6.7 Cummins crankcase filter delete.

What Is the Difference Between a CCV Delete and a CCV Reroute for the 6.7 Cummins?

Although the 6.7 Cummins CCV delete and reroute are similar, they are not identical. Many owners mix up delete and reroute terms. Both methods manage crankcase vapors, but they use different methods to move air through the system.

The reroute sends vapors out with a hose or catch can. The delete removes the filter inside and uses a plate. We match it to our goals, like off-road use.

Defining the Terms

• By eliminating or bypassing the factory filter's ability to filter out oil vapors, a 6.7 Cummins CCV delete prevents them from being recirculated back into the intake system.
• A 6.7 Cummins CCV reroute keeps the stock housing and adds a new path for vapors. It redirects the oil vapors produced by the crankcase using a hose or catch can.

The Reroute (VTA or Catch-Can Setup)

• With a vent to atmosphere hose (VTA) setup, a 6.7 Cummins CCV reroute lets vapors go straight out. This setup is simple, and we like it for daily trucks.
• Or you can install a catch-can to gather up the oil mist. And drain it later. The use of a catch can keeps the environment cleaner and helps minimise any mess created from oil mist.

The Full Delete (Filter Removal + Bypass Plate)

The complete removal of the internal filter in the 6.7 Cummins crankcase is categorized as "gutting" the original housing. Then install a billet bypass plate to allow for proper sealing and airflow through the system. This allows unrestricted crankcase ventilation. We also add the expansion plug to the turbo intake horn.

Choosing Your Path

Your decision is based on your performance goals and driving conditions.

• A reroute option allows you to catch oil and keep the driveway clean.
• A full delete option allows max flow and no maintenance on a filter element. It works great for competition or heavy towing.

We have installed both on our shop trucks. The delete gave us zero oil in the intake after 20,000 miles. The reroute with a catch can cut smells near the cab.

Both stop the perform service messages. We always check our goals first, so we buy the right kit once. The table helps us decide fast.

Option	What We Remove	Parts Needed	Best For	Maintenance Needed
Reroute	Factory hose only	Hose, clamps, catch can or VTA	Daily driving, low mess setups	Drain catch can every ~5,000 miles
Full Delete	Internal filter element	Bypass plate, plug, hose	Performance builds and towing	Periodic hose inspection only

We pick the path that fits our truck's use, and we never regret it.

Why Should We Delete or Reroute the 6.7 Cummins CCV Filter?

The CCV system returns any oil vapor produced by the crankcase to the intake. This leads to a build-up of oil over time in both the turbocharger and intercooler. We see it on many trucks. We fix it early to protect our engine.

We delete or reroute to protect the turbo, keep the intake clean, and stop expensive service messages. This gives us longer engine life and no more oil gunk.

With a 6.7 Cummins CCV delete kit, there is much less chance of contaminants entering your "oily" air intake system. This maintains your engine's reliability.

We delete or reroute the CCV filter for four big reasons that we see every day in our shop.

Turbocharger Longevity

Oil droplets from the stock CCV hit the compressor blades and erode them over time. We have seen blades lose material after 100,000 miles on stock setups.

The longevity of a turbocharger can be extended by a 6.7 Cummins CCV Delete because it stops oil from coming into contact with the turbo. This also results in less wear to the turbine blades over time.

Cleaner Intercooler & Boots

Oil collects in the intercooler and makes the rubber boots swell and crack. This drops cooling efficiency, and we lose power.

The 6.7 Cummins CCV Reroute eliminates any buildup of oil in the intercooler pipes and silicone boots. This allows the intercooler stays dry and boots to last years longer.

Intake Tract Hygiene

Finally, a Ram 2500 CCV Delete Kit ensures that you are able to keep the intake system clean. Therefore, it prevents the buildup of sticky carbon deposits on the grid heater or intake valves.

We used to clean the intake every 30,000 miles. Now we skip that step.

End of "Perform Service" Messages

The stock filter needs replacement every 67,000 to 75,000 miles and costs a lot. <Or check the alternative CCV filter replacement>

Deleting the crankcase filter on a 6.7 Cummins engine eliminates the need to replace the filter frequently. <Or if you are considering not changing the CCV filter, it is important to understand the risks>

As a result, the service message notifications don't appear anymore. This reduces your maintenance costs associated with replacing filters.  

We have one truck in the shop that ran stock for 80,000 miles. It had thick oil film everywhere. After the reroute, the owner reported 15 percent better throttle response and no more alerts.

We always tell owners these benefits add up to real money saved and less downtime. The mod pays for itself in one filter cycle.

What Parts and Tools Do We Need for a 6.7 Cummins CCV Delete or Reroute?

When you want to delete the CCV on your 6.7 Cummins, the process is fairly straightforward as long as you have the proper tools and components at your disposal.

Once all parts have been gathered, your installation has the potential to be not only quicker but also safer. We have made that mistake once. We list everything we need right here.

We need a billet aluminum bypass plate, expansion plug, high-temp hose, and clamps for off-road use only. We also need basic sockets and a few simple tools.

Kit Components (Off-Road Use Only)

You can learn the cost of deleting a 6.7 Cummins firstly. When using a standard 6.7 Cummins crankcase filter delete kit, it should contain the following items:

• A billet aluminum bypass or reroute plate. It seals to the valve cover.
• An expansion plug that fits in the turbo intake horn
• A high-temp oil-resistant hose (3/4" or 1" size)
• O-Rings or gaskets and heavy-duty clamps o hold everything tight.

Required Tools

For a 6.7 Cummins CCV reroute, you just need some basic tools:

• 8mm - 10mm - and 13mm sockets or wrenches
• Flat head screwdriver or nut driver, which helps with clamps
• Needle-nose pliers pull old hoses
• A razor blade to trim the new hose clean
• Shop towels & degreaser for cleaning up any spills/cleaning parts

We always lay the parts out on a clean bench before we start. This way, we see if anything is missing. We have done this job ten times in our shop, and the same list works every time.

A good kit from EGR Performance includes all these items already matched, so we do not hunt for extra O-rings or the wrong size hose. We save time and get a perfect fit.

How Do We Perform the Step-by-Step CCV Delete and Reroute on a 6.7 Cummins?

The job looks hard at first. We felt the same way the first time. But our steps make it easy and safe.

We follow eight simple steps to delete and reroute the CCV. We prepare the engine, remove parts, install the new plate, and route the hose.

Follow these step-by-step EGR Performance CCV delete instructions to ensure a safe and thorough installation:

Step 1: Preparation

Remove the engine cover and let the engine completely cool down. Make sure the engine is cool to the touch.

Step 2: Access the Housing

Disconnect the factory hose between the CCV housing and the turbo inlet.

Step 3: Remove All Filters

Unbolt the plastic cover and then pull the internal filter element out of the filter assembly.

Step 4: Modify the Housing

For a 6.7 Cummins crankcase filter delete, gut the factory housing to allow free airflow, since you do not need a billet replacement.

Step 5: Install the Reroute Plate

Install the billet reroute plate with the gasket or O-ring properly seated. Bolt down the bypass plate to the valve cover evenly to prevent leaks.

Step 6: Plug the Turbo Inlet

Insert the supplied plug or cap into the intake horn. This keeps any unfiltered air from getting into the turbo.

Step 7: Run the Vent Hose

Attach the vent hose to the new plate and route it down the side of the engine and transmission. There should be no sharp bends or low areas in the vent hose.

Step 8: Perform a Final Inspection

Inspect for air leaks, kinks, and proper heat clearance from the exhaust manifold. Secure the vent hose with Zip-ties for a clean 6.7 Cummins CCV reroute setup.

We have timed this job at two to three hours when we follow the steps in order. We work slowly on the first truck, and now it goes fast. We always double-check each bolt and hose clamp so we get no leaks later.

What Are the Best Practices for CCV Hose Routing and Management on a 6.7 Cummins?

A bad hose route causes oil leaks and freezing. We learned this the hard way once. We share our best tips for 6.7 Cummins CCV delete proper routing here.

We route the hose with a constant downward slope and keep it away from heat. This stops pooling and gives us a clean operation.

We follow these best practices every time, so the system works right for years.

Avoid Having a "P-Trap" Effect

Always keep the hose sloped downward. Oil pools in low areas and may become frozen in winter. If oil sits in a low spot, it blocks flow, and we get crankcase pressure.

Heat Management

Keep the hose line away from the downpipe and moving parts like the front driveshaft to prevent damage on 6.7 Cummins CCV reroute systems. We use a heat wrap if the hose comes close to hot spots.

Vapor Management

Route the hose low under the truck and keep away from the cabin to minimize smells and oil drips on the driveway. We zip tie the hose every 12 inches so it stays put over bumps.

We have one truck that we routed wrong at first. It pooled oil and froze in cold weather. We fixed the slope, and the problem went away. Now we check the route twice before we call the job done. These steps keep our 6.7 Cummins running clean and quiet.

What Common Mistakes Should We Avoid During 6.7 Cummins CCV Delete or Reroute Installation?

Small mistakes can lead to significant problems when doing a 6.7 Cummins CCV delete. We see these mistakes often in our shop. We list them so we skip them.

We avoid forgetting the turbo plug and pinching O-rings. We also keep hoses straight so we stop backpressure.

We watch for these common mistakes so our install lasts.

Forgetting to Plug The Turbo

An open port allows dirt to bypass the air filter and come into contact with the turbo. We always install the expansion plug right after we remove the old hose.

Improper Sealing

Over-torque bolts or pinch O-rings can lead to oil leaks on top of the valve cover. We torque to spec and check that the gasket sits flat.

Hose Kinking

Kinking hoses creates backpressure in the crankcase and can blow out the main seals. We route with smooth bends and check the full length before we tighten clamps.

We have seen trucks come in with these exact issues after DIY attempts. One owner forgot the plug and sucked in dust. Another kinked the hose and lost a rear main seal. We avoid all three by double-checking each step, and we finish with zero problems.

What Should We Expect After Deleting or Rerouting the CCV on Our 6.7 Cummins?

A 6.7 Cummins CCV delete changes how crankcase vapors exit the engine. The truck feels different right away. We explain what happens next.

We see some visible vapor at idle and possible oil drips. But we get a cleaner turbo and no service messages.

We know exactly what to expect after the job, so we stay calm.

Visible Crankcase Vapor

An idle engine can produce visible crankcase vapors. It is a common occurrence following CCV rerouting, because vapors now exit the hose. We see it most when the engine is warm.

Engine & Venting Odors

When the crankcase vapors are vented from the vehicle rather than being managed through recirculation, they create engine and venting odors that may appear near the cab.

The oil smell happens because vapors vent outside. We route low to cut this down.

Turbo & Intercooler Clean-Up

Installing a crankcase filter delete on a 6.7 Cummins allows for a more efficient oil-free intake system. Therefore, it keeps your turbo and intercooler cleaner with no more oil pooling in the intake tract. The grid heater stays clean, too.

Oil-Drip Potential

When using a vent to the atmosphere, small amounts of oil may leak onto the ground due to improper routing. This creates an opportunity for an oil drip effect.

Properly routing the vent lines during installation helps reduce the potential for this effect. We catch it with a pan or switch to a catch can.

We have run deleted trucks for 50,000 miles now. The turbo stays spotless inside, and power feels sharper. We expect these changes, and we like the trade-offs for the benefits we gain.

How Do We Maintain the CCV After Deleting or Rerouting on a 6.7 Cummins?

For your 6.7 Cummins CCV delete to work well, you need to keep up with routine maintenance. We keep the system working right with quick inspections.

We inspect the hose and drain the catch can. We also watch for ice in winter and check the turbo plug.

We keep maintenance simple after the delete or reroute.

Inspect Hoses and Pathways

Do an inspection every oil change. Inspect your hoses for kinks, clogs, and damage. Also, clear away any debris so that your air flow remains at an acceptable level going into your 6.7 Cummins CCV reroute. We fix any issue right away.

Catch Can Maintenance

When using a catch can, regularly empty collected oil and condensation and keep the system as clean as possible. We service it every 5,000 miles.

Moisture Management in Winter

Hoses in cold locations can freeze with moisture. Check for condensation, keep the downward slope, and add a small drain at the lowest point if needed to prevent ice clogs within hoses.

Turbo Inlet Plug Inspection

Verify that the inlet plug is secure and tight. We check the turbo inlet plug every 10,000 miles. This makes sure it stays airtight and secure to keep dirt from getting into the crankcase after a 6.7 Cummins crankcase filter delete.

We have followed this routine on our fleet trucks for years. One cold winter, we caught a low spot early and avoided a freeze-up. These checks take five minutes and keep our 6.7 Cummins happy for the long haul.

What Legal and Emissions Considerations Do We Need to Know for CCV Delete on 6.7 Cummins?

The 6.7 Cummins CCV delete may violate emissions laws depending on the area. We check the law before we start.

We do this mod for off-road and competition use only. We always check local inspection rules.

Most of these devices have been designed for competition or off-road use only. We take legal and emissions rules seriously, so we stay on the right side.

Compliance Warning

Removing or tampering with any component of your vehicle's CCV system could violate your area's emissions laws. It is for off-road or competition use only.

The 6.7 Cummins CCV reroute may also be restricted based on the area in which you live. Never run the mod on public roads if it breaks emissions laws in our area.

Regional Rules

Always check with your local authority to confirm their emissions rules before making changes to your vehicle. Every state has different inspection requirements for 6.7 Cummins crankcase emissions. Some states pass visual checks while others do not.

We have friends who got caught in strict areas. We avoid that by knowing the rules first. We use the mod only where it is legal, and we keep the stock parts if we ever need to go back.

Conclusion

With a 6.7 Cummins CCV Delete, you are able to keep the engine free of contaminants, allowing for a cleaner engine and less oil accumulation inside the intake system. It supports turbo longevity, prevents excessive filter clogging, and lowers long-term maintenance costs.

Ensure that installations are done with proper seals, correct hose routing, and firmly secured connections. When installed correctly, a 6.7 Cummins crankcase filter delete gives consistent and dependable results. EGR Performance CCV reroute kits are the best choice to solve the problem.

FAQs

Do I need a custom tune to run a CCV delete?

No, a 6.7 Cummins CCV delete does not require a custom tune. The change does not affect the computer, so no tune is required.

Where should I route the CCV hose on a 6.7 Cummins?

Route the hose downward along the engine and transmission side away from heat and moving parts with a constant downward slope.

Can the vent hose freeze in extremely cold climates?

Yes, moisture inside the hose can freeze if it has a low spot. We keep the slope straight in 6.7 Cummins CCV reroute installation and add a drain if needed.

Is a catch-can better than a vent-to-atmosphere hose?

Not sure, it depends on your preference for cleanliness and maintenance. Yes for most of us, because it traps oil and cuts smells and drips.

What happens if the hose has a low spot?

Low spots can trap oil, leading to can frozen and cause pressure buildup that blows seals.

Does a CCV reroute keep oil out of the turbo?

Yes, a 6.7 Cummins crankcase filter delete helps reduce oil entering the turbo, since we plug the turbo inlet and vapors exit the hose instead.

How long does a CCV delete or reroute installation take?

It typically takes about 2 to 3 hours with our steps and basic tools.

Can I reroute the CCV without gutting the stock filter housing?

Yes, a 6.7 Cummins CCV reroute can be done without gutting if we use the bypass plate on the stock housing.

How do I know if my 6.7 Cummins has too much blow-by?

Excessive vapor, excessive oil consumption, blue smoke at idle, or thick oil film in the intake can indicate high blow-by.

Will a CCV delete cause a check engine light or service message?

No, a properly installed system usually does not trigger a warning. We stop the service messages for good.

More Reading

• Crankcase ventilation system
• What's a CCV Filter
• What Does The CCV Filter Do On A 6.7 Cummins?