AEM Electronics Analog Wideband Air/Fuel UEGO Gauge Kits

Name: AEM Electronics Analog Wideband Air/Fuel UEGO Gauge Kits
Price: 249.78 USD

zray · May 23, 2010

wicked93gs said:
I had the innovate LC1 first...but fried for some reason within 2 months(still dont know why) so I replaced it with the AEM unit and never had another problem...and as for analog vs digital, you definately want digital...analog takes way too long to get a good reading(it changes very quickly sometimes)......................... out of all the gauges though, a digital AFR is the most distracting

my AEM has been reliable as well, 3+ years so far. I despise digital, but in this case it's very useful as the slightest adjustment of the idle mixture screws can produce a dramatic change in the a/f ratio reading. That said, I'm tempted to try the AEM analog read-out gauge to see how it compares. Summit has a lower price than buying from AEM.

Analog Wideband Air / Fuel Gauge - Wideband O2 UEGO, X-WiFi, EMS Series 2, Engine Management, F/IC, Tru Boost, Gauges, and more Automotive Performance Electronics

AEM Power 30-5130 - AEM Power Analog Wideband Air/Fuel UEGO Gauge Kits - Overview - SummitRacing.com

Z.

zray · Aug 23, 2011

dobrostang said:
"..........I'm going to try some modifications this winter to the Double pumper I found on a web site to get a little better mileage.

well. . . . share the wealth, what web site?

I very good investment is a wideband air/fuel ratio gauge permanently installed in an easy to see location, it's amazing to see how much leaner a carb can be safely tuned. The $200 spent will save you hours of carb (and timing) tuning.

analog
AEM Power 30-5130 - AEM Power Analog Wideband Air/Fuel UEGO Gauge Kits - Overview - SummitRacing.com

or

digital
AEM Power 30-4100 - AEM Power Digital Wideband Air/Fuel UEGO Gauge Kits - Overview - SummitRacing.com

also having a vacuum gauge helps to inform the driver when his foot is too far into the throttle.

Z

TommyK · Aug 23, 2011

zray said:
well. . . . share the wealth, what web site?

I very good investment is a wideband air/fuel ratio gauge permanently installed in an easy to see location, it's amazing to see how much leaner a carb can be safely tuned. The $200 spent will save you hours of carb (and timing) tuning.

analog
AEM Power 30-5130 - AEM Power Analog Wideband Air/Fuel UEGO Gauge Kits - Overview - SummitRacing.com

or

digital
AEM Power 30-4100 - AEM Power Digital Wideband Air/Fuel UEGO Gauge Kits - Overview - SummitRacing.com

also having a vacuum gauge helps to inform the driver when his foot is too far into the throttle.

Z

Yes it is amazing what can be learned with one of these devices. Innovate Motorsports has a site with a lot of in depth carb tuning info using a wideband. I've been playing around with one this summer on my 460 with a Holley 950hp. You would think that when you buy a new carb that the calibration would at least be in the ball park? Wasn't in my case and in many others.

I bought a wideband and about 40 bucks worth of taps, drill bits and brass set screws and I'm having a ball!.

zray · Aug 25, 2011

TexasEd said:
is there a tutorial on how to use that gauge?

I have good results by following these guidelines:

idle: as lean as the engine will tolerate and still idle smoothly. In my car thats about 13.7 to 14.0 depending on the ambient air temp.

just off idle at a steady cruising speed: low rpm and low engine output. Here is where you can run pretty lean w/o any ill effects, and get those mpg numbers up. At least 14.7 to 15.2

increased load: like in going up a long incline at a steady speed, 13.75 to 14.25

acceleration & wide open throttle: best horsepower is made around 13.5

I am using this gauge: http://www.summitracing.com/parts/AVM-30-4100/

I'm not liking the digital readout, as it doesn't really fit in with the other gauges. At some point I'm going to put in the analog version:
http://www.summitracing.com/parts/AVM-30-5130/

cold engine at idle:

full acceleration:

hope this helps,

Z.

zray · Jun 29, 2012

I used this one for years:

http://www.summitracing.com/parts/AVM-30-4100/

it works great, that said, if I had it to do over again I would buy the analog version instead:

http://www.summitracing.com/parts/AVM-30-5130/

I think the digital readout looks out of place in a '60's era car.

Z.

zray · Dec 16, 2012

68_GT said:
".......... I know how extremely important a/f tuning as well as distributer (ignition) tuning is on these non computer controlled cars is, and I don't have the time, patience, or knowledge to figure it all out.

why not install an a/f meter in the cockpit and you will always know if the carb mixture is in the ballpark.

analog dial: http://www.summitracing.com/parts/avm-30-5130/overview/

digital dial: http://www.summitracing.com/parts/avm-30-4100

I've used the digital model for years. It has saved me countless hours when troubleshooting various carb and ignition issues. I do wish I'd bought the analog version, the digital one just doesn't blend in with a '60's era instrumentation.

Z.

zray · May 4, 2013

I have the AEM meter. Been using it for about 6 or 7 years with zero problems.

http://www.summitracing.com/parts/avm-30-4100/overview/

Although it is working perfectly, I recently bought an AEM analog read out gauge to replace it. I just grew tired of the digital readout gauge which looks out of place in a vintage car in my opinion.

http://www.summitracing.com/parts/avm-30-5130/overview/

Z.

app01 · May 7, 2014

Thanks for all of the info folks.. All makes sense.

I was thinking of going with an analog style and was looking at the AEM 30-5130
http://www.summitracing.com/parts/avm-30-5130/overview/

ozarks06 · May 7, 2014

app01 said:
Thanks for all of the info folks.. Al makes sense.

I was thinking of going with an analog style and was looking at the AEM 30-5130
http://www.summitracing.com/parts/avm-30-5130/overview/

I would recommend this one:

http://www.summitracing.com/parts/avm-30-4100/overview/

The analog meter looks cool but if you've ever tried to watch the meter when winding out in 2nd gear it's a WHOLE lot easier to read the digital meter (with big, bright, exact numbers) than the analog (with a small needle moving across small numbers with small divisions).

Also, I have some datalogging software I wrote for the AEM meters (at least it works for the 30-4100). I'll give you a copy if you want to use it. You'll have to wire the RS-232 from the meter to your PC or to an RS-232 to USB adapter to use it (output is RS-232 from the meter). PM me if you're interested.

The AEM 30-4100 is a great meter, and as others have noted, you only need one.

zray · Apr 29, 2015

I use a couple of these AEM Units. They have a lot to say, we have regular conversations about what's happening inside the combustion chamber.

http://www.summitracing.com/parts/avm-30-5130

Z

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