I have an 03 z06 with a cat back system from borla, I also have the mp112 intercooled magnacharger. I just got a new afx ngt setup for the wb 02 sensor. I have read that the 10-1 clock position but what do you do about placing it in the titanium and welding. Or.can I put it in the stock location of one of the old 02 sensors I know it will have a code but just to tune it with. I also read on hear that the 7 cylinder has a tendancy to run lead so if you just have one wideband put it on that side. Thanks for the help.