Variant 1
ECU- Catalog engine
- 3000 267HP
- Controller brand
- DELCO
- ECU
- E39A3
- Stock power
- 267 HP
- ECU SW
- 12655479
- ECU HW
- 12653997
- SW upgrade
- 24106377
BUICK · E39A3 ECU
BUICK REGAL E39A3 tuning files
The BUICK REGAL on the E39A3, mapped from stock file to finished result. The matched variants sit between 267 and 267 HP from the factory. Stage 1 and Stage 2 are the safe starting points for this platform. Your file is built against the exact ECU software on the car, then operator-verified.
Available solutions
Applicable work for the E39A3 on this vehicle. The available set firms up once the exact engine and software are known.
Engine variants & ECU software
1 distinct variant for the BUICK REGAL on the E39A3 ECU. Reference the engine and controller software when you upload.
Related vehicles
Other vehicles built on the E39A3 controller or the same engine — handy when a platform spans several models and makes.
Questions, answered.
Which tuning solutions are available for the BUICK REGAL on the E39A3?
Stage 1, Stage 2. The exact set depends on the specific engine and software version.
Do you cover the E39A3 ECU software on this model?
Yes — the BUICK REGAL on the E39A3 ECU is part of the catalog. Upload your original file and it is matched to the right calibration before any work is done.
How is the file delivered?
Through the TuningBay workflow with operator validation and one safe, sensible result per job. Files we deliver, we stand behind.