Modern vehicles, EURO 3 and higher vehicle emissions standards, there is a secondary lambda oxygen sensor restrictor, located after the catalytic converter. Playing a diagnostics role, if irregularities are detected an error message on the dashboard is shown, the engine can switch to emergency mode (depending on the make of car). It is often results in a power drop. These problems arise in the event of removal of the catalyst.
|Internal Thread||M18 x 1.5mm|