Hello. I have an ecr33 skyline (rb30/25det) and going to use Nistune ecu. I have a plx afr gauge (dm-6) and it has a narrowband output so I'm wondering it it'd be worth it to use that signal for ecu? The reason i'm wondering is the plx afm is brand new and the cars o2 sensor is original (now 23 years old). I've heard that people changing o2 sensors get better fuel consumption etc so could the plx result in more accurate readings? I'm having a new downpipe/exhaust made up regardless so that doesnt matter. Dont really want to buy a new o2 sensor for ecu if I can simply use the plx for that aswell. Thanks for any help!