Cummins 6.7L Turbos
Cummins Turbo FAQs
What turbo fits my Cummins truck?
Start with your engine size and exact model year. Turbo Time offers 5.9L and 6.7L Cummins turbos with different applications within each range. Verify the product's year coverage, mounting requirements, and actuator options rather than choosing by engine displacement alone.
Browse 5.9L Cummins Turbos or 6.7L Cummins Turbos.
What is the best Cummins turbo upgrade for towing?
A towing turbo should deliver responsive boost and useful torque through the engine speeds you use under load. Turbo Time offers towing-oriented options such as the 5.9L Stage 2 HXR and 6.7L Stage 1 and Stage 2 HXR turbos. The best match depends on your truck, fueling, and towing needs.
What size turbo should I run on my Cummins?
Choose turbo size around your horsepower goal, available fueling, and driving needs. A truck used for daily driving and towing may need a different setup from a dedicated high-horsepower build. Going too large can slow boost response, while going too small can limit power.
Do I need a tune with a Cummins turbo upgrade?
It depends on the model. Turbo Time's Stage 1 HXR for 2007.5–2018 6.7L Cummins trucks does not require tuning, but tuning is recommended for optimal performance. Other products have their own recommendations, so check the listing for your chosen turbo.
Will a turbo upgrade retain my 6.7 Cummins exhaust brake?
A compatible VGT upgrade can retain the factory exhaust brake. Turbo Time's 2007.5–2018 Stage 1 and Stage 2 HXR listings specifically describe retaining factory exhaust braking and electronics. Do not assume every turbo or conversion offers the same functionality.
Can a Cummins turbo upgrade help lower EGTs?
A properly matched upgrade can help reduce exhaust gas temperatures by improving airflow. Turbo Time's Stage 2 HXR listings describe designs intended to support lower EGTs and drive pressure. Actual results depend on the complete setup and operating conditions; a larger turbo alone does not guarantee lower temperatures.
Do I need to replace the whole turbo if my Cummins turbo actuator fails?
Not necessarily. The actuator and turbocharger need separate evaluation to determine which component has failed. A qualified technician should follow the applicable diagnostic procedure before recommending an actuator or complete turbo replacement.
Does a replacement Cummins turbo actuator need calibration?
Calibration requirements depend on the actuator and application. Follow the instructions supplied with your exact actuator and turbo assembly, and confirm the required setup before installation.
What are the symptoms of a failing Cummins turbo?
Common symptoms can include:
- Reduced power or slower-than-normal boost response
- Unusual whining, scraping, or siren-like noises
- Excessive exhaust smoke or increased oil consumption
- Difficulty building boost
- Turbo-control or actuator-related trouble codes
These symptoms do not automatically mean the turbocharger itself has failed. Boost leaks, fueling problems, sensors, exhaust restrictions, lubrication issues, or actuator problems can produce similar symptoms. The truck should be diagnosed before parts are replaced.
What is the expected life of a Cummins turbo?
A properly maintained Cummins turbo can commonly last around 250,000 miles. Service life depends on regular oil changes, clean air filtration, proper installation, and operating the turbo within its intended range. Addressing leaks, low oil pressure, and performance issues early can help prevent premature failure.
Are performance turbos reliable?
Yes. When the turbo is properly matched to the truck's fueling, tuning, and intended use, a performance turbo can be very reliable. A correctly selected upgrade can improve airflow efficiency and help reduce EGTs, especially when towing or working the truck under load.