what is it doin? is it jumpin around alot? granted u got the gauge for 20 bukks, but i say u should invest into a egt gauge. far more accurate to read and understandin of ur motor's performance.

even if u do tap at the ecu its still the same, that same white wire comin from the o2 goes ryte into the ecu. doesnt make a difference, cuz i install one for my friend civic at the ecu, and another for friend's prelude at the o2. does the same thing. jumps around til wot, then it holds a steady readin.