There is a little gizmo that replaces the rear o2 sensor and fakes the computer out. Then you just tie the connector up out of sight.... The issue is that the sensor needs to see certain temps to work correctly which makes placement a bit of an issue.
Dave __________________
Dave - PDX
1995 318ti - Active Black and Tan.
2005 330xi - Mtech 1 - 6spd - Orient Blue/Black |