Stereo & Electronics - Difference between Wide and narrowband?

Looking to put a gauge in my car for A/F ratio whats difference between the 2? And I have o2 bungs in both sides of my exaust can you somehow do both banks or do you just pull of one side?

Wideband Air/Fuel Ratio Gauge vs. Narrowband Air/Fuel Ratio Gauge
(http://www.autometer.com/tech_faq_answer.aspx?sid=1&qid=48)

THanks for the link. Is the factory o2 a wideband? And would you run a wideband af meter?

Stock O2's are narrowband and I run a WBO2 for tuning.
For wideband data you need a WBO2 controller,
LC-1, LM-1, AEM, F.A.S.T ect.

I would just like it to make sure the car isnt going rich or lean. I was looking at the ultralight wideband meter with the sensor wouldnt that work, thought I could just plug gauge into included O2 sensor I already have the bungs on my header kit. Do I need a controller for the gauge to read?

Bump. Which way would you go for keeping an eye on a nitrious fed car?

Definitely get a WBO2.

http://autometer.com/cat_gaugedetail.aspx?gid=3604&sid=11

Will this function or do I need a controller box of some sort to make the gauge work?

I guess I read the FAQ and am still in the dark lol. Is the wideband more accurate? Or just can show you more width of fuel ratio?

Yes that is a controller and a gauge all in one.