Diagnostic OnlyDD84 Bad or Unknown Tune Evaluation
Ask DD84 to confirm the application, selected package, timing and any additional costs before purchase. Ask DD84
REVIEW & NEXT STEPS
Find out what an unknown tune needs next.
Diagnostic evaluation of the existing calibration and available supporting data. Findings and recommendations; no tune editing or flashing included.
Diagnostic evaluation only — no tuning is included.
This service is for customers who already have a tune file and want DD84 to review it before making additional changes or purchasing another tuning service. DD84 will inspect the existing calibration and available supporting data to identify questionable areas, determine what may need attention, and help separate calibration-related concerns from possible mechanical issues.
What DD84 evaluates
- Existing calibration/tune file
- Available datalogs and diagnostic trouble codes
- Fueling, airflow, spark/knock and throttle-related areas where supported
- Transmission and TCC-related areas where supported
- Changes or areas that may need correction
- Whether the concern appears calibration-related, mechanical, or a combination of both
Important: this service does NOT include
- Editing or modifying the tune file
- Creating or delivering a new calibration
- Flashing the vehicle
- Tune revisions
- HP Tuners credits, licensing or unlock services
- Mechanical repairs
This product is an evaluation/diagnostic service only. If DD84 determines that calibration changes are recommended, actual tuning is quoted or purchased separately.