My engine is carburated and I would like a wideband O2 gauge to monitor the AFR while tuning the carb so I can get everything spot on. Does anyone have any recommendations for a good one. I dont like to be a cheap skate, but the cheaper the better! I have all autometer pro comp ultra lites guages right now, does autometer make an AFR guage in that series?


EDIT- i forgot to ask another question. My fuel guage only goes to 3/4 tank at full and goes all the way down to the e and stops moving when i still have at least 5 gallons in the tank. I have an autometer guage (fuel level) that was in the car when i got it, if i connect this guage will it fix the problem or is it most likely the sender?

 

I just installed an air fuel guage. I wanted a wide band too but settled for a cheapo narrow band one after I found out what wideband o2 sensors and gauges cost.

It seems to work ok, I gained a couple of MPG. I was surprised to learn how rich my idle and how lean my carb at WOT was. This was with a brand new Holly 4160 that's supposed to be tuned for most applications out of the box. Yeah right!

 

Autometer's website is pretty good and they have a WBO2 gauge in your series: Pro comp ultra-lite WBO2 I use google shopping to find the best price and Summit will match it.

I use an Innovate LC-1 gauge and it works well.

Don't get a narrow band O2 sensor unless you only want to tune idle and cruise.