Q1: Can you run a 6.7 Cummins without a CCV filter?
A1: Yes, with a CCV delete kit like this one, you can reroute crankcase gases safely outside the intake system, eliminating the need for a factory CCV filter while improving performance and cleanliness.
Q2: Is a CCV delete illegal?
A2: Depending on your state and local emissions laws, removing or altering emissions-related components like the CCV system may be considered illegal for street use. Check your region’s regulations or use for off-road/race purposes only.
Q3: What are the benefits of a CCV delete kit?
A3: A CCV delete helps prevent oil blow-by from entering the intake, reduces intake sludge, improves engine cleanliness, and enhances long-term reliability.
Q4: What happens if you don't change your CCV filter?
A4: A clogged or saturated CCV filter can cause pressure buildup in the crankcase, leading to oil leaks, degraded engine performance, and increased wear on seals and gaskets.
Q5: Will a clogged CCV filter show symptoms in a 6.7 Cummins?
A5: Yes, symptoms include visible oil around the valve cover, increased crankcase pressure, reduced power, and in some cases, a check engine light or DTC codes.
Q6: What are common symptoms of a bad CCV filter?
A6: Common symptoms include oil residue in the intercooler, poor fuel economy, excessive crankcase pressure, smoke from the breather, and a whistling sound from the engine.
Q7: Will this CCV delete kit trigger a check engine light?
A7: In some vehicles, minor codes may appear after a CCV delete. These do not impact drivability and can typically be cleared with a compatible tuner like Mini Maxx.
Q8: Does the kit require regular maintenance?
A8: No, this is a service-free system. The breather filter can be cleaned occasionally if exposed to heavy dust or debris.
Q9: Will this kit affect my truck’s warranty?
A9: Modifying emissions-related systems may impact your vehicle warranty. Consult your dealer before installing if under warranty.
Q10: Can I install this kit myself?
A10: Yes, installation is simple and takes approximately 1–3 hours. Basic hand tools are sufficient, and a step-by-step guide or video is provided.