The docs are here
http://aemelectronics.com/files/instructions/30-4110%20Digital%20Wideband%20UEGO%20Gauge.pdf
Near the end it shows what each position of the switch does. In pos #4 the gauge's white wire emulates a standard narrow band. I also believe the display stays in AFR setting. Only Pos #2 changes the display to Lambda instead of AFR but I'm not 100% on this as the doc is a bit ambiguous about lambda display. Best to have someone that has the gauge move the switch to pos 4 to be sure the display remains in AFR mode.
Quote:
Originally Posted by 911pcars
Sal,
Just to confirm.
Rewiring the AEM white sensor wire to the factory O2 harness connection and changing the switch setting (position 4) on the back of the gauge provides the correct 0-1V signals for proper DME operation.
... and the gauge still displays accurate A/F ratios throughout the wide band range. Have I got that right?
I asked someone at AEM (or a 3rd party salesman) awhile back and they said "no".
Thanks
Sherwood
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