GM Custom ECU Tuning Service
Ask DD84 to confirm the application, selected package, timing and any additional costs before purchase. Ask DD84
DD84 SERVICE
Choose a tuning path for your GM build.
Custom ECU calibration for supported GM LS/LT combinations. Send the vehicle and modification details so DD84 can confirm the right package.
GM LS/LT custom tuning — start with your vehicle
Custom calibration for supported GM LS/LT combinations, including bolt-on, cammed, naturally aspirated and boosted builds. DD84 confirms the exact controller, operating system, hardware and vehicle condition before work proceeds.
Send your GM build details before choosing a package. Select Georgia local service, Jefferson-area service, LaGrange-area mobile tuning inquiry or nationwide remote tuning in the form. DD84 assigns the appropriate technician and confirms service availability, coverage and scheduling after review.
Listed package prices
- Basic Tune — $350
- Street Tune — $450
- Performance Tune — $650
Ask DD84 to confirm which package fits your vehicle, what is included, the revision allowance and any additional equipment, licensing or controller-access costs before purchasing. A package name alone does not confirm compatibility or an appointment.
What to send
- Year, make, model, engine and transmission; donor details for swaps
- ECM/TCM model and OS/strategy if known; interface and software available
- Fuel, injectors, camshaft, power adders and complete modification list
- Current symptoms, DTCs and your goal
- City/state and whether you need local or remote support
- Current calibration and datalogs when DD84 requests them
How the work starts
- DD84 reviews compatibility and mechanical readiness.
- DD84 confirms scope, price, equipment needs, timing and revision/support terms.
- Purchase the confirmed service and follow the assigned intake and logging instructions.
- Calibration delivery follows the required controller/OS and configuration checks.
Mechanical readiness: misfires, fuel-pressure problems, major wiring faults and unresolved sensor issues must be corrected before tuning. A base file is not a substitute for custom calibration and validation.
Need equipment? Review the HP Tuners loaner; availability and compatibility require confirmation. Read the compatibility guide.