Dafuer gibt es doch Simulatoren
Adjustable O2 / Oxygen Sensor Simulator (SIMULATOR)
MAGNUM O2 Sensor Simulator is an indispensable tuning device by engines where catalytic converter was removed from exhaust system. Missing of catalytic converter indicates polluted exhaust gas to the ECU, therefore check engine light will flash for a while or illuminate all the time, resulting medium level performance at the wheels. Simulator is a plug-in replacement installed to the sole - or in case of multiple o2 sensor system - to secondary O2 sensor. It supplies perfect voltage signal for the ECU, as if the catalytic converter would be in place and purify the exhaust gas.