MDS, or Multi-Displacement System, is a technology used in some Ram 1500 models to improve fuel efficiency by deactivating certain cylinders when they are not needed. To permanently turn off MDS on a Ram 1500, you may need to install a performance tuner or programmer that can reprogram the engine’s computer to disable MDS.
Here are some general steps to permanently turn off MDS on a Ram 1500:
- Purchase a performance tuner or programmer that is compatible with your Ram 1500 model and year, and specifically states that it can disable MDS.
- Connect the performance tuner or programmer to your Ram 1500’s OBD-II port, which is typically located under the dashboard on the driver’s side.
- Follow the instructions provided with the performance tuner or programmer to reprogram the engine’s computer to disable MDS.
- Drive the vehicle and test to ensure that MDS is indeed turned off.
It’s important to note that the process and instructions may vary depending on the specific Ram 1500 model and year, and the type of performance tuner or programmer you use. It’s recommended to check the compatibility of the performance tuner with your Ram 1500 model and year, and ensure that the performance tuner is legal for use in your area. It’s also important to remember that disabling MDS will likely have an impact on your fuel efficiency, as well as other systems that may be connected to the engine.
You can also read about tonneau cover for ram 1500 with rambox.
How do I disable MDS 5.7 Hemi?
Disabling the Multi-Displacement System (MDS) on a 5.7 Hemi engine can be done by reprogramming the engine’s computer, also known as the engine control module (ECM). This can be done by using a performance tuner or programmer that is specifically designed to disable MDS.
Here are some general steps to disable MDS on a 5.7 Hemi engine:
- Purchase a performance tuner or programmer that is compatible with your specific make and model of vehicle, and specifically states that it can disable MDS on a 5.7 Hemi engine.
- Connect the performance tuner or programmer to your vehicle’s OBD-II port, which is typically located under the dashboard on the driver’s side.
- Follow the instructions provided with the performance tuner or programmer to reprogram the engine’s computer to disable MDS.
- Drive the vehicle and test to ensure that MDS is indeed turned off.
It’s important to note that the process and instructions may vary depending on the specific make and model of vehicle, and the type of performance tuner or programmer you use. It’s recommended to check the compatibility of the performance tuner or programmer with your specific make and model of vehicle, and ensure that the performance tuner is legal for use in your area. Additionally, disabling MDS will likely have an impact on your fuel efficiency, as well as other systems that may be connected to the engine.
