BUICK · E78 ECU

BUICK REGAL E78 tuning files

Tuning file coverage for the BUICK REGAL running the E78 ECU. The matched variants sit between 267 and 270 HP from the factory. There are 2 distinct variants on file for this combination. Stage 1 and Stage 2 are the safe starting points for this platform. We match the right calibration to your exact software and validate it before delivery.

Upload your file →All REGAL coverage

Available solutions

What we can run on the E78 for this vehicle — the precise options narrow down by engine and software version.

Stage 1 Stage 2

Engine variants & ECU software

2 distinct variants for the BUICK REGAL on the E78 ECU. Reference the engine and controller software when you upload.

Variant 1

ECU

Catalog engine: 2000 270HP
Controller brand: DELCO
ECU: E78
Stock power: 270 HP
ECU SW: 12652190
ECU HW: 12650191

Variant 2

ECU

Catalog engine: 3000 267HP
Controller brand: DELCO
ECU: E78
Stock power: 267 HP
ECU SW: 12662405
ECU HW: 12647136

Related vehicles

Other vehicles built on the E78 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 E78?

Stage 1, Stage 2. The exact set depends on the specific engine and software version.

Do you cover the E78 ECU software on this model?

Yes — the BUICK REGAL on the E78 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.