I am currently using a UEGO AEM WBO2, I have the black and red wire hooked up to12v and ground. I am curious as to where the other users have spliced in the white a blue wires?

And where did u run the harness from the O2 itself to the back of the gauge? I was thinking of running above the drive shaft and have it coming into the car where the shifter is, would that pose a problem?

Ok well I got the sensor installed. Routed the connector over the diff. and ran the wire up through the fuel pump access and down the center console.

Now I had my car warmed up and my AFR reading is 17+. At cruising speeds 60kmh or 40mph the reading is between 15.3-16.0. The ideal reading is around 14.5 right? So is there a reason my readings are so lean?

Current mods: Underdriven pulley, MS Intake, Catless TurboXS. And i just went in for the latest flash the other day.

Help is appreciated

The blue and white wire are for tuning. Just leave them... they shouldnt be connected.

I have the same wideband, but on a GTO. I don't know where you guys are positioning the O2 bung, or if you hijack one of your existing O2 bungs when you're not running cats (we tune out the second O2). I don't know how to explain the readings you're getting. The AEM self calibrates. I guess the RX8 experts can answer.

Most of the time, you'll see folks mistakenly place the wideband after the cats and see lean readings.

this might help:

http://rotaryinsider.com/viewtopic.php?t=16

The blue and white wire are for tuning. Just leave them... they shouldnt be connected.

I have the same wideband, but on a GTO. I don't know where you guys are positioning the O2 bung, or if you hijack one of your existing O2 bungs when you're not running cats (we tune out the second O2). I don't know how to explain the readings you're getting. The AEM self calibrates. I guess the RX8 experts can answer.

Most of the time, you'll see folks mistakenly place the wideband after the cats and see lean readings.


as stated above I do have a catless system and there is a bung located near the back of the exhaust right before the mufflers, could it be the bung is too far down stream, or maybe a possible exhaust leak? :scratchhe

Here's the thread you should read
http://www.rx8club.com/showthread.php?t=104587&highlight=wideband+placement

I think placing it that far down is probably affecting it, but, as you can see, placing it before the mid pipe will destroy it from heat... somewhere in between. And take note of the angle of install... condensation.

Did you drive around with the sensor installed without any power going to it? Thats a sure way of killing a sensor. It has to have power to it, or else it'll get fouled, and not read correctly. Luckily, the wideband O2 sensr is not that expensive in comparison to the gauge.

Here's the thread you should read
http://www.rx8club.com/showthread.php?t=104587&highlight=wideband+placement

I think placing it that far down is probably affecting it, but, as you can see, placing it before the mid pipe will destroy it from heat... somewhere in between. And take note of the angle of install... condensation.

Did you drive around with the sensor installed without any power going to it? Thats a sure way of killing a sensor. It has to have power to it, or else it'll get fouled, and not read correctly. Luckily, the wideband O2 sensr is not that expensive in comparison to the gauge.

thanks for the link. ill be sure to read it. no i didnt have the sensor in without it being plugged in.

my readings have come down a bit now idle is still hovering around high 16 and my cruising is from 14.3-15.6ish