Catalyst Off explained — how it works, related DTCs and how Softechpro does it with automatic checksum correction.
Catalyst Off removes the cat-efficiency monitoring (P0420/P0430) from the map for motorsport and export applications. Softechpro applies it directly in the ECU calibration and recalculates the checksum & CVN automatically, so the file is flash-ready. Typical related codes: P0420, P0430.
Catalyst Off is intended for off-road, motorsport, closed-course and export use in line with local law. It is one of the all-in-one services in Softechpro alongside DPF/EGR/AdBlue/DTC off and Stage 1/2/3 tuning.
Yes — Catalyst Off is built in, applied to your exact ECU software version with automatic checksum & CVN correction.
Yes — the checksum & CVN are corrected on every output so the ECU accepts the flash. Flash with adequate battery voltage.
Emissions-related changes are for off-road, motorsport and export use only, in line with local law.
Softechpro is a subscription from €98.99/mo (Yearly €1,035) for cloud module patching, tuning and DTC solutions.
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