ORIGINAL: mustang_montana

to clear things up. with all 4 o2s disconnected your car will still run, just like complete ****. with the rears disconnected you go into limp home mode, which you can drive for months and months without it causing problems. the two open holes will sound like crap, and make you smell like exhaust. thats it. ive ordered from mustang tuning a dozen times, never a problem and always had my item within 5 days. guess you got **** luck fella.

ohh i just remembered your mils are still connected, youll be just fine then. little obnoxious sounding and smelling but fine none the less.