November 2025 – ECUFILES Release
ECUFILES presents a clean catalyst-off solution for all VW, Audi, SEAT and Skoda models with the 2.0 TFSI engine and Bosch MED9 ECU.
Most cat-off files disable too much – including the first lambda sensor and unrelated diagnostics. This leads to error codes and lost functionality.
Our file only disables what truly needs to be disabled for catalyst removal. The first lambda sensor remains 100% functional, all diagnostics stay active, and no extra systems are switched off.
The car remains fully diagnosable, shows no warning lights, and in many cases passes OBD readiness tests thanks to readiness_ok.
Why this file is better:
- Only catalyst-related changes
- First lambda and diagnostics fully working
- No error codes
- Readiness_ok in many cases
- Safe for daily use
Ideal for sporty exhaust upgrades without compromises.
Already available in your ECUFILES account.
