Turning OFF HEMI Cylinder deactivation/MDS 👍

How to Disable Cylinder Deactivation in a Ram HEMI 🔥 In this video, I show you how I disable the MDS (Multi-Displacement System) / cylinder deactivation on my Ram truck with the 5.7L HEMI V8 — no tuning, no modifications, just using the factory gear limiter on the steering wheel. I also clear up a common misconception around MDS and lifter failures. In my experience, MDS in the HEMI platform is often blamed for issues it isn’t directly responsible for. That’s very different from what we’ve seen with certain GM V8 cylinder deactivation systems, where lifter failures are much more closely tied to the technology itself. This video isn’t about bashing brands — it’s about understanding how these systems work, how to manage them, and separating myths from reality. As always, this is based on real-world experience and observation, not internet rumors. Let me know in the comments if you leave MDS on, turn it off, or if you’ve had issues with it in your truck. #RamTrucks #HemiV8 #MDS #CylinderDeactivation #TruckTech