Join Date: Mar 2002
Location: Merritt Island, Florida
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Re: Air/Fuel Meter
You can actually use a digital voltmeter hooked straight to the O2 sensor. Just hook it up and use it as a temp situation, but you must find out which voltages indicate lean, rich, etc. and there are places on the net for that. I have some of that info somewhere, I will look for it and let you know.
The gauges can be pricey for a poor person like me, but Summit has several. People have told me that it is better to avoid the LED gauges. I have no actual experience with the gauges.
Good luck and I will try to find the info for you,