i recently purchased a dc header from the local speedshop. right after i purchased it i was busy installing it, but i noticed that there is no o2 sensor on the header. i thought dc headers came with o2 bungs. and what in the hell do i do with the exhaust manifold o2 sensor? as a temporary fix i plugged the exhaust manifold o2 sensor into the cat coverter, and moved the 1st cat converter o2 sensor to the back of the cat. the 2nd cat o2 sensor i just tied onto a bar to keep it from dragging or getting in the way. how long do u guys think i could go like this while keeping the engine healthy? i know i have to switch my header or get a bung welded into it but time is limited right now. just wanted to know how much time i had. sorry for the long post, thnx in advance..

also i have a OBD2 b18c1