November 2025 – ECUFILES Release
ECUFILES now offers a clean catalyst-off solution for the 1.5 TSI engine with Bosch MG1CS011 ECU across VW, Audi, SEAT and Skoda models.
We only disable what truly needs to be disabled for catalyst removal. The first lambda sensor remains 100% functional, all diagnostics stay active, and nothing else is switched off.
No warning lights, full diagnosability, and in many cases readiness_ok for passed OBD tests.
Why choose this file?
- Only catalyst-related changes
- First lambda and diagnostics fully working
- No errors
- Readiness_ok in many cases
- Safe and reliable
Perfect for performance exhaust upgrades.
Already available in your ECUFILES account.
