Which e28? Which motor? Which engine management? What are your plans for the exhaust? The answers to all of these questions are required before anyone can guide you on the proper location for the O2 sensor on the e28 that you're "buildin".
yeah, i dunno i just have ALOT of 2.5" exhaust pipe layin around n figured i would use it, as for the stock 02 where should i put that one? because my car hasnt had one since i owned it so i have no idea where it should be
ditto the minimum 3" or dont bother. im pretty sure in the instructions to your o2 it probably says a minimum of 16" down stream from the turbo. And it probably says somewhere in there not to put it on a bend and it should be about 10 degrees off of horizontal. But i bet you didnt read the instructions, cause your a man. And a manly man at that.
alright alright jeez haha n no offense but im not into men haha its cool if thats your "ball field" haha but not mine, thanks... you guys even though u harass a bit first u help out alot