HEMI MDS Delete (Cylinder Deactivation Disable) – Dodge, Jeep & Chrysler V8

We provide professional MDS delete tuning for HEMI V8 engines, disabling the factory Multi-Displacement System (cylinder deactivation) through ECU recalibration.

This service is available for 5.7L, 6.2L and 6.4L HEMI engines, including post-2019 models, across Dodge, Jeep and Chrysler vehicles.

  • No hardware modifications required
  • ECU software recalibration
  • No permanent fault codes (no P1400 detection)
  • Clean integration with factory systems

What is MDS (Multi-Displacement System)?

MDS, also known as cylinder deactivation, is a factory system that shuts down 4 cylinders in your V8 engine under light load conditions to improve fuel economy.

In real-world driving, this often results in:

  • Noticeable vibration when switching between 4 and 8 cylinders
  • Inconsistent throttle response
  • Loss of true V8 exhaust sound
  • Increased wear on internal components, especially lifters

Why Drivers Choose MDS Delete (HEMI)

Most customers searching for terms such as MDS delete HEMI, disable cylinder deactivation Dodge RAM, HEMI lifter failure prevention or turn off eco mode V8 Jeep are usually trying to solve one or more of the following issues:

1. Engine Vibration & Driveability Issues

Running on 4 cylinders can create unwanted vibration and inconsistent engine behaviour, especially during light-throttle cruising.

2. Restore Proper V8 Sound

MDS interrupts the natural V8 exhaust note. Disabling it helps restore the consistent sound many HEMI owners expect from their vehicle.

3. Lifter Failure Prevention

MDS-equipped HEMI engines are well known for lifter and camshaft wear, which can eventually lead to major engine damage. Disabling MDS is often chosen as a preventative reliability modification.

Supported Vehicles

We offer MDS delete tuning for a wide range of HEMI-powered vehicles, including:

  • Chrysler 300C
  • Chrysler Aspen
  • Dodge Challenger
  • Dodge Charger
  • Dodge Durango
  • Dodge Magnum
  • RAM Trucks
  • Jeep Cherokee
  • Jeep Commander
  • Jeep Grand Cherokee

How the MDS Delete Works

The modification is carried out through ECU software recalibration:

  1. Read the factory ECU data
  2. Modify the cylinder deactivation strategy
  3. Disable MDS operation completely
  4. Flash the updated software back to the ECU

No physical components are removed, and the engine continues to operate as a full-time V8.

Book Your MDS Delete / HEMI Tuning

If you are looking for a reliable MDS delete tune in Australia, we can help.

Contact Us or Call Us

Speak directly with our team to confirm compatibility with your vehicle and discuss the best option for your HEMI engine.

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