Okay guys. If I want to use a narrow band O2 for A/F, can I piggy back on the factory sensor before the first cat? Or do I have to install a second bung and sensor? If I have to install a bung then I might as well use a wideband and install that sensor. I would rather use a wideband but not thrilled about having to pay to have a bung installed.
The pillars look terrific and with nice gauges will look and work great. But this mod is going to end up being pretty spendy by the time its done. I am looking at AF, boost and oil pressure. I think I have almost talked myself out of the IAT.

Thanks,
MikeR