Hey, all you E30 M3 pilots: Does anyone have any suggestions on an easy way to remove the oxygen sensor from the downpipe? I can't seem to get any kind of wrench on it because of its proximity to the firewall. Is there a special socket available somewhere that makes removal possible without taking the exhaust manifold off the engine? Help! Bob Stommel 88 M3 78 320iS (no oxygen sensor, no computer, just lots of fun)