I have both the AEM UEGO gauge and an AEM serial gauge (running off an EMS of course), so I can compare the 2. They are on completely separate channels (I have 2 different wideband sensors).

The serial gauge is reliable and gives consistent readings.

The UEGO gauge is very unreliable, stops working for no reason, and gives inconsistent readings. It is basically useless.

After speaking with my tuner, who has installed dozens of these UEGO gauges, it seems that there is a serious quality control issue with them. Basically, their failure rate is huge.

I feel sorry for people with just one (gauge-type) AEM UEGO. They probably have no idea how inaccurate those readings are. I wish someone had told me before I wasted my money.

- Erich

 

$hit. my tuner just recommended yesterday that i go find a UEGO to go with my 1052 EMS. i was going to get that + truboost gauge and be done with gauges and boost controller all together...

thanks for the post. i'll have to look into this in depth.

 

Interesting, I haven't had any problems with mine. Are you running the same brand/model sensors? Which controller are you using for the 2nd sensor, does your ems have a built in controller?

 

My UEGO has been spot on perfect for over a year. You may have gotten a defective unit.