ok so i found a narrow band gauge and i know i need a wideband to tune but i am just curious what is the difference between the 2

 

a narrowband is something to take to a rave, and a wideband is used to tune a car lol

basically with the narrowband you're using the signal from your stock 02 sensors. laymens terms its not as accurate as using a wideband sensor, which you weld into the exhaust

 

ok so really a narrow band is a waste