so guys, in my previous posts i have said that i have a 97 z34, with a bad 02, but it turns out to be a cracked rear manifold, now that aside, im looking at adding a narrow band air fuel to the car for the time being, here is my question, to get at the rear 02 is a pain the butt, i have read in my haynes manual that the signal wire is pink im assuming, now i do see that it also comes up to the mass air flow sensor, my question is if i tap into the wire after the mass air flow will that show my af ratio on the gauge or should i try to find out were it combines into the wiring harness closer to the 02 sensor which could be a pain since its a 3.4 dohc motor, just curious. thanks