If you aren't getting the car tuned you can install it as a secondary O2 simply to feed data to the gauge. If you are getting the car tuned then definitely replace the narrowband with the wideband, wire it into the gauge/controller AND the Hondata unit/ECU. It's only one wire to the ECU normally, and it should just go to the pin that the stock O2 signal wire runs to. It'd be a waste not to get proper use out of it or see the benefits of running a wideband in the first place.
-ZAMMIN-
"I know who you are, and I know if I make a formal complaint Mr. Benjamin will have to roll over and give me all your details"
I am getting it tuned. My tuner has wideband but it is only tailpipe sniffer. Is it worth spending 200+ for a little bit more accuracy or will the tailpipe sniffer suffice?
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