HEMI MDS Disable – Full-Time V8 PCM Mail-In Service (2005–2014)
⚠️ IMPORTANT — READ BEFORE ORDERING
This service is intended for vehicles that are OUT OF FACTORY POWERTRAIN WARRANTY or used for off-road / performance applications.
Disabling MDS may void factory warranties and is not recommended for vehicles where warranty retention is a concern.
If maintaining factory warranty coverage matters to you, do not purchase this service.
❌ What Problem This Solves
The factory Multi-Displacement System (MDS) in HEMI engines is commonly associated with:
- Unwanted cylinder deactivation
- Drivability complaints during MDS engagement/disengagement
- Incompatibility with camshaft upgrades
- Exhaust drone and inconsistent throttle response
- Long-term reliability concerns for modified engines
This service permanently disables MDS operation in the PCM, allowing full-time V8 operation.
✅ What This Service Does
This is a mail-in PCM tuning service that modifies your factory calibration to:
- Permanently disable MDS (Multi-Displacement System)
- Eliminate MDS-related diagnostic trouble codes (DTCs)
- Prevent MDS activation under all operating conditions
- Maintain normal drivability with full-time V8 operation
No physical parts are included.
❌ What This Service Does NOT Do
Be clear on this before ordering:
- Does not repair damaged lifters
- Does not repair camshaft wear
- Does not fix existing mechanical engine damage
- Does not preserve factory powertrain warranty
This service assumes the engine is mechanically sound.
🚗 Vehicle Coverage
Compatible with most 2005–2014 Dodge / Chrysler / Jeep vehicles equipped with HEMI engines using MDS.
If you are unsure about compatibility, contact us before ordering.
🛠 How the Process Works
- Purchase the service through our website
- You will receive an order confirmation email
- Ship your PCM to us with:
- Order number
- Full name
- Return shipping address
- Phone number and email
Once received, your PCM is modified within 24 hours and shipped back ready for installation
📦 Shipping Information
- Customer ships PCM to us
- Return shipping is included (US only)
- Typical turnaround time: 1 business day after receipt
📌 Important Notes
- This is a tuning-only service — no hardware included
- Offered exclusively through our website
- Off-road / motorsport use recommended
- Emissions compliance varies by location
WHO THIS SERVICE IS FOR
✅ Out-of-warranty vehicles
✅ Performance-oriented builds
✅ Camshaft upgrades
✅ Owners who want full-time V8 operation
WHO THIS SERVICE IS NOT FOR
❌ Vehicles still under factory powertrain warranty
❌ Owners seeking “hidden” or reversible modifications
❌ Engines with existing mechanical failures