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How To: Install a AEM WIDEBAND

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AEM UEGO WIDEBAND Install/Review
Rick Inacio

The AEM UEGO wideband gauge is a "MUST" for all tuners and boosted cars. With it's 0-5v output, it has the capability of logging with just about any stand alone unit out there. The UEGO is a 52mm gauge that makes it a perfect fit for any gauge pod or any custom mounting location. With easy to read interface air/fuel LCD display, it also shows 3 different colors showing me just how lean or rich my car is running.

The single channel AEM unit is accurate to a 0.1 air/fuel ratio and also comes with a Bosch 02 sensor (#30-4100). The UEGO needs no laptop or any other type of monitor to make it read. It's 24 color-coded LED display lights provide immediate reading to engine's air/fuel ratio or Lambda. This kit is just as easy as installing a boost gauge with its easy hookup wiring, all I had to do is install the O2 sensor 36" away from the turbo and run 2 wires.

Once I started my tuning, all I had my eyes on was the AEM wideband gauge telling me just how rich and lean I was running. The kit also comes with face plates and different color bezels to add style and looks to your car. The unit has "REALLY" helped me tune my race car and is well worth every penny.

This tech article will show you how to install a AEM UEGO Wideband Gauge.
Approximate install time 1-2 Hours

First thing you wanna do before installing the UEGO is change the gauge configuration. (face plate & bezel)

Place the gauge anywhere inside of a 2" hole. (piller or custom mounting place)

There are 2 wiring harness with the kit. The short is used for the functions on the gauge and the longer one hooks up to the UEGO sensor.

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Hook up the 2 harness to the back of the gauge. (6 pin and 4 pin)

Run the longer harness through the firewall.

Use C shape holder to tighten the gauge on the back.

Disconnect the negative (-) battery cable.

Remove downpipe and weld the M18x1.5 bug at least 36 inch's from the exhaust side of turbo and on a 10deg angle (minumum) to avoid overheating the sensor and keeping any moisture from pooling on the sensor.
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Screw in the UEGO sensor onto the bung on the downpipe.

Connect the end latch of the UEGO sensor to the latch end of the 6 wire harness from the gauge.

Now its time to wire up the 4 pin harness.
-RED (Power) Connect to a 10v-18v power source.
-BLACK (Ground) Connect to a clean grounding point.
-WHITE(Analog Output) Connects to any auxiliary unit with a 0-5v input.
-BLUE(Serial Output) Connects to a RS-232 com port. (This output is optional)

Connect back the negative (-) battery cable.

Start car and let the motor warm up for more then 20secs.
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