Recommendation for Wideband Air/Fuel Ratio guages?

[Ted G]

Thinking about using an Air/Fuel ratio gauge and set up to help me fine tune my carburetor. Yes, I know all you EFI guys will chime in, but I love my carb. Looking for either a remote gauge I can keep in my glove box, or a mounted gauge (under the dash).

My questions are:

1) Do I need sensors on both sides of the motor?
2) Do these typically need to be calibrated or are they just plug and play?
3) I see some in the $100-$150 range and others as much as $600. What would be the difference?

Just for reference, I have a 427 stroker with mild cam and a 750 Holley carb with vacuum secondaries. I also have GasN headers and side pipes. So I can put the sensors on either side.

Thank in advance.

[skidd]

AEM all in one gauge controller sensor. I have one and it works well, and is a nice clean install. I think I paid about $150

1: you can install in just one side , I'll be just fine.
2: some do. The innovate LC1 does. The above AEM does not.ug and go.
3: features and interface options you don't need.

[skidd]

Found it.
This is the one I have.
I liked that I could swap the faceplate.
Better matches my dash.

AEM (30-4110) UEGO Air/Fuel Ratio Gauge https://a.co/d/9lJuvu0

[MB750]

3rd for AEM. Good quality, relatively inexpensive if you just get the gauge. I don't need datalogging.

[Mike.Bray]

Carburetor? Damn, I had no idea they still made those. LOL

[Ted G]

Thanks guys, I purchased this AEM X-series which comes with the Bosch sensor based on some research and your recommendations. Now, where do I put it? I'm probably going to do an underdash mount as I don't want to ruin my well-thought-out dash layout... maybe not so well thought out!!

https://www.amazon.com/dp/B01FEH2GNW...roduct_details

Dash10.jpg

[Jim1855]

I had the F.A.S.T. dual channel years ago. Seemed to work well but... I spent enough time looking at it change it's readings that I wasn't spending my time driving. I pulled it out and gave it to my friend with a dyno. Found it better to dyno tune the carb and then leave it alone.
Jim

[F500guy]

I suspect after tune, you will have little use to monitor it regularly, so maybe a temporary set up would be better.

[MB750]

I suspect after tune, you will have little use to monitor it regularly, so maybe a temporary set up would be better.

That's exactly how I use mine. Tune it, then remove it. It's not like the tune is gonna change drastically anyway.

[BRRT]

Speedhut offers an AFR gauge that would match the rest of your gauges.

[Its Bruce]

Speedhut offers an AFR gauge that would match the rest of your gauges.

I'll note that I went this route with a permanent WB gauge, and the analog output works perfectly with my tuning software. I suspect this would also work with your dyno provider's software. I've also tied in the throttle position signal to constrain the warning light. 'Appreciate this probably wouldn't be applicable in your carb scenario.

[skidd]

My only issue with the speedhut gauge was the lack of a digital readout. I have speedhut gauges for all my others. And quite like them myself, over the years, I've grown accustomed to reading AFR in digital. I find that I like to watch for changes as small as 0.1 . Just to gauge how the car is running today. I can't easily see that with an analog gauge.

Which is another point to the OP. Permanent or Temporary install. I'm also carbd. I'll never NOT have an AFR gauge. I always like to watch the state of my cars tune. The AFR changing can be an early warning for you, that something else is going on. My 02c.