A tuning file service built by tuners, for tuners
A file service is only as good as the engineers behind it. At Shop4Tuner every request is opened as a WinOLS project and calibrated for the exact ECU, hardware and options you specify. We do not resell database files blind.
Our calibration families are developed and verified on our own dyno in Belgium. When we quote a gain, it has been measured on rollers, on a real car, by the same team that answers your support questions.
That is the difference between a partner and a mere file reseller: when a project needs a second iteration, an unusual hardware configuration or an honest “this platform won't take more”, you talk to an engineer who knows your case.

What you get
- ✓An individual WinOLS project per file, checksums corrected, ready to flash
- ✓All stages and options from one token balance
- ✓Feasibility answered before you commit tokens
- ✓Free revisions if the calibration needs adjustment
Understand the process: guides
ECU tuning explained: how remapping a car engine works
How ECU tuning a car engine actually works: reading the unit, editing the maps, writing back and correcting the checksum. The engine ECU tuning process step by step.
What is chiptuning? A clear guide for workshops
Chiptuning, or ECU tuning, rewrites the engine control unit map to gain power and torque. What a workshop needs to know before getting started.
How a tuning file service works: upload, remap, download
A tuning file service takes your read, develops the file and sends it back ready to flash. How to choose the best tuning file service for your workshop.
Ready to send your file?
Create your professional account, buy tokens and upload your original read. Your custom file is back in 60 minutes maximum, with a real-time estimate.
Real-time estimate, 60 minutes maximum