When decatting a petrol engine for performance it is likely an engine management light will be illuminated and a fault code for catalytic efficiency will be stored inside the ECU memory (P0420). By careful recalibration of the engine ECU data we can disable the function of the second/post lambda sensor.
The second lambda sensor is used monitor the efficiency of the catalytic converter, by disabling the second lambda sensor it will allow a decat pipe to be used on a vehicle without triggering an engine management light or any associated fault codes.
Decatting a vehicle normally triggers a P0420 fault code (Catalyst System Efficiency Below Threshold (Bank 1)). Our lambda delete service will permanently remove this fault and no engine management light will be illuminated.