GM LS Gen III/IV Custom Tuning — P01, P59, E38 & E67

GM LS Gen III/IV Custom Tuning

Custom HP Tuners calibration for supported LS-powered cars, trucks, SUVs, swaps, and crate-engine combinations.

Supported applications

Common LS1, LS2, LS3, LS6, LS7, LQ4, LQ9, LM7, L33 and related Gen III/IV applications in Chevrolet, GMC, Cadillac and Pontiac vehicles or correctly configured swaps.

Supported control units and access

Common supported controllers include GM P01, P59, E38, E40 and E67. HP Tuners publishes broad OBD read/write and datalog coverage for these controller families. Transmission support varies by installed TCM. Exact vehicle, controller, operating system, licensing credits, and unlock requirements are confirmed after purchase. Support is based on the installed controller—not the badge or model year alone.

Choose the service level

• Calibration Level: Select the option matching the installed hardware. Stage names define service scope, not a guaranteed power figure.
• Drivetrain Service: Engine-only or engine plus a supported transmission calibration.
• DTC Review: Choose no DTC changes or a review of supported non-emissions diagnostic codes. This option does not include disabling required emissions or safety systems on street vehicles.

Included service

• Build, fuel, hardware, stock-file, and readiness review
• One confirmed hardware configuration and one primary fuel setup
• Scheduled remote connection or file workflow, datalog review, calibration changes, and revisions inside the purchased time block
• Fuel, ignition, airflow/load, torque, boost, throttle, drivability, and supported transmission strategies as applicable

Included time: Bolt-Ons — up to 3 hours. Camshaft Build — up to 5 hours. Forced Induction — up to 6 hours. Time includes setup review, connecting, logging, calibration work, revisions, troubleshooting, and communication.

After purchase and scheduling

Our team will email the address used at checkout to confirm the vehicle, ECU/TCU, hardware, fuel, tuning goals, required files, and an available appointment time. Text or phone follow-up may be used when needed. Sessions are scheduled in Eastern Time.

Before the appointment

The vehicle must be mechanically complete, leak-free, fueled correctly, and ready to produce repeatable logs. HP Tuners hardware, vehicle credits, cables, controller unlocks or exchanges, bench services, and dyno rental are separate unless specifically stated.

Time and revision policy

This is a scheduled professional service, not an open-ended support window. Mechanical faults, connection problems, incomplete hardware, or incorrect fuel can consume the purchased time. Work beyond the included block must be purchased as Additional Calibration Time and scheduled before tuning continues. Major hardware or fuel changes may require additional time or a new calibration.

Specific power is not guaranteed. Results depend on vehicle condition, hardware, fuel quality, environment, and safe operating limits. Customers are responsible for legal and emissions compliance.