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.

Corvette HP Tuners Custom Tuning | PCM & TCM Unlock

Corvette HP Tuners Custom Tuning

Corvette HP Tuners Custom Tuning & PCM/TCM Services

Unlock the true performance of your C5, C6, C7, or C8 Corvette with professional HP Tuners custom tuning from N2 Speed. Whether you're running an LS1, LS3, LS7, LT1, LT4, or LT2 engine, our custom calibrations deliver maximum power, drivability, and transmission control for street, strip, or track use.

Using HP Tuners MPVI2, MPVI2+, or MPVI3 with VCM Suite software, we provide remote calibrations tailored to your build — optimizing fuel maps, spark timing, torque management, and transmission strategies for bolt-ons, camshaft upgrades, stroker builds, or superchargers.

Why HP Tuners for Your Corvette

HP Tuners provides the deepest calibration access available for GM vehicles. Unlike handheld programmers, VCM Suite gives our tuners control over hundreds of parameters including:

Individual cylinder fuel and spark tables
MAF calibration and VE table editing
Variable Valve Timing (VVT) profiles on LT engines
Torque management tables — critical for supercharged and high-horsepower builds
Full transmission shift scheduling, line pressure, and converter clutch strategy

Custom Tuning Solutions

Bolt-on modifications — cold air intakes, long-tube headers, exhaust systems, ported throttle bodies
Camshaft and stroker engine tuning — idle quality, VVT calibration, and naturally aspirated power optimization
Supercharged Corvette builds — Procharger, Whipple, Magnuson with boost-by-gear and air/fuel management
Turbo builds — single and twin turbo LS and LT setups with wastegate and boost control
Fuel optimization — dedicated 91/93 octane or E85 ethanol calibrations
Transmission tuning — shift scheduling and torque management for A6, A8, and A10 automatics

PCM & TCM Unlock Services

2017+ Corvettes and all C8 models ship with factory-locked control modules. N2 Speed provides mail-in PCM and TCM unlock services for full calibration access:

Gen V ECM unlocking — C7 LT1/LT4 and C8 LT2/LT6 Powertrain Control Modules
T87A TCM unlocking — 8-speed automatic (C7 2015+)
T93 TCM unlocking — 10-speed automatic (C8 Stingray)

Supported HP Tuners Devices

MPVI3 — latest generation with wireless connectivity and fastest read/write speeds
MPVI2+ and MPVI2 — fully supported for all LS and LT Corvette applications

How Remote Tuning Works

Read your stock calibration — connect your MPVI device and save the factory file
Send us your file and mod list — we review your build and create a custom calibration
Flash and drive — write the tune to your Corvette's PCM/TCM
Free revisions — we refine until the calibration is dialed in perfectly

Get professional HP Tuners tuning for your Corvette. Call (954) 406-8550 or contact us to get started.