What is a PCM unlock?

A PCM unlock removes the factory encryption from the Powertrain Control Module so professional tuning tools can read and write calibration data. On most 2015+ Dodge, Jeep, Chrysler, and RAM vehicles, unlocking is required before custom tuning can be performed.

Why do 2015+ Dodge, Jeep, and RAM vehicles require unlocking?

Starting in 2015, FCA implemented security protocols that restrict tuning access through the OBD port on many vehicles. Unlocking enables calibration access so changes to airflow, torque management, fueling, and other tables can be flashed safely.

Do I have to mail in my PCM?

Yes. The unlock process is performed on a bench and requires the PCM to be removed from the vehicle and shipped in for service. Once unlocked, the PCM can typically be read and written via OBD using supported tuning platforms.

How long does the PCM unlock process take?

Typical turnaround is 1–3 business days after the PCM is received, plus shipping time. Tracking is provided when the module ships back.

What vehicles commonly need a PCM unlock?

Most 2015+ Dodge, Jeep, Chrysler, and RAM vehicles with encrypted controllers require unlocking before tuning. Common examples include 2015+ Charger, Challenger, 300, Grand Cherokee, and RAM 1500. If you are unsure, provide your VIN and we can verify.

What controllers are supported for PCM unlocking?

Common encrypted FCA controllers include GPEC2A, GPEC3, GPEC5, and NGC. Compatibility can vary by year and model, so VIN verification is recommended if you are not sure which PCM your vehicle uses.

Is a PCM unlock safe?

Yes. Unlocking is designed to enable calibration access and does not change stock drivability by itself. The vehicle will operate normally on a stock calibration or a custom tune after unlocking.

Can I return the PCM to stock after it is unlocked?

Yes. An unlocked PCM can still run a stock calibration file. Unlocking enables access, but you can flash stock or custom files as needed using a supported tuning platform.

Will unlocking void my warranty?

Unlocking enables tuning access, and any calibration changes may affect manufacturer warranty coverage. If warranty is a concern, some customers keep their original PCM stock and use a spare PCM for modifications.

Do I still need HP Tuners credits after unlocking?

Yes. Unlocking enables access, but you still need the appropriate interface and licensing (credits) to read, license, and flash the vehicle with HP Tuners or other supported tools.

Can you tune my vehicle after unlocking?

Yes. We offer custom remote tuning for bolt-ons, camshaft upgrades, injector scaling, boost setups, and torque model optimization. Pairing an unlock with a custom calibration is the best way to improve performance and drivability.

Jun 29th 2026

Dodge Computer Tuning: The Complete Guide to ECU, PCM & TCM Services

Dodge Computer Tuning: Everything You Need to Know

Modern Dodge vehicles - Challenger, Charger, RAM trucks, Durango, and Jeep Grand Cherokee - are controlled by onboard computers that manage everything from engine power to transmission behavior. Computer tuning (also called ECU tuning, PCM tuning, or flash tuning) modifies these computer calibrations to unlock more performance, better drivability, and features the factory left on the table.

What Is Computer Tuning?

Your Dodge has several computers that control the powertrain:

PCM (Powertrain Control Module) - Controls engine timing, fuel delivery, torque management, speed limiter, and rev limiter
TCM (Transmission Control Module) - Controls shift points, shift firmness, torque converter lockup, and line pressure

Computer tuning modifies the calibration data in these modules to optimize performance. Think of it like updating the software on your phone - same hardware, better performance.

What Can Computer Tuning Do for Your Dodge?

PCM Tuning Benefits

Add 10-30+ horsepower depending on your mods
Sharpen throttle response dramatically
Remove or reduce torque management (huge on HEMI platforms)
Delete MDS (Multi-Displacement System) to keep all 8 cylinders active
Remove the factory speed limiter
Adjust rev limiter
Optimize air/fuel ratios for your fuel grade (87, 91, 93, or E85)

TCM Tuning Benefits

Firmer, faster shifts
Hold gears longer for more power before upshift
Reduce shift flare (RPM spike between gears)
Improve torque converter lockup for better power transfer
Better tow/haul calibrations for RAM trucks

Dodge Vehicles We Tune

Vehicle	Years	Services Available
Dodge Challenger	2005-2024	PCM unlock, custom tune, TCM tune, MDS delete
Dodge Charger	2005-2024	PCM unlock, custom tune, TCM tune, MDS delete
RAM 1500/2500/3500	2005-2024	PCM unlock, custom tune, TCM tune, tow calibration
Jeep Grand Cherokee	2005-2024	PCM unlock, custom tune, TCM tune
Dodge Durango	2011-2024	PCM unlock, custom tune, TCM tune
Chrysler 300	2005-2024	PCM unlock, custom tune, TCM tune

Do I Need a PCM Unlock First?

For 2015 and newer Dodge, Chrysler, Jeep, and RAM vehicles: yes. Chrysler locked the PCM starting in 2015, which means you need a PCM unlock service before any custom tuning can be done. This is a one-time service - you mail us your PCM, we unlock it in 1-2 business days, and mail it back. Then you're free to tune as much as you want.

For 2005-2014 Dodge vehicles, no unlock is needed. You can tune directly with HP Tuners or Diablosport.

Remote Computer Tuning - No Shop Visit Needed

N2 Speed specializes in remote email tuning. Here's how it works:

Order your tune package online
Read your vehicle's stock calibration using an HP Tuners RTD or Diablosport device
Email us the file along with your mod list
We write your custom calibration and email it back
Flash the tune to your vehicle and go drive
Send us a data log, we make revisions until it's perfect

No need to find a local tuning shop. We've tuned thousands of Dodge vehicles for customers across all 50 states.

Get Started

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