Hey i just wanted to know if O2 sensors are mandatory in a car? I have an 87 GT with an EFI 351w in it. The idle is kind of rough (drops and surges once in a while) and i was wondering if it was because i dont have the O2 sensors plugged in. Is there any sort of adaptor that can bypass the sensors? Thanks [img]/phpBB/images/smiles/icon_tup.gif[/img]