Ive already started a thread on this as titled Air/Fuel gauge....I thank you all for your replys alot of good info. But my main unanswered question...Will a narrow band 02 sensor read correctly on a carburated car????? I know a wide band has much more precision because of the massive voltage range it can read. But think of it this way, stoic is stoic and these gauges pick this up regardless of band width. So narrow band may not be 100% accurate but it will at least show if theres a lean condition, especially if I have one on each bank. LAstly.....Will the stock 02 sensors feed the narrow band gauges?????? Thx Chris