Skip to content

How it works Runs Tuning Services FAQ BlogContact

Tuning
Tuning
Great Wall

Great Wall tuning

Pick a Great Wall model.

Haval H61 engine
Haval H81 engine
Haval H91 engine
Wingle 71 engine

Ready when your car is

Tuners send a file to the file service. Car owners book a slot at the workshop.

Register for file service Talk to the workshop

ECU and TCU calibration, in our workshop or as a remote file service for tuners.

Explore

How it works
Runs
Tuning
Services
FAQ
Blog
Resources
Contact

Get started

Portal
Register
Contact

Hours

Mon to Sat: 09:00 to 21:00
Sun: Closed

German time (CET, CEST in summer)

© 2026 GTECH Calibration