Logging A/F using AEM Analog Wideband question
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Logging A/F using AEM Analog Wideband question
So today I installed a serial adaptor that I bought from Mellon Racing. The instructions that came with serial adaptor talk about using the blue wire from the gauge to log. Well the analog gauge has a White Analog Output + wire and also it has a Brown Analog - wire. I wired the White wire to the blue wire on the adaptor from Mellon Racing, and grounded the brown wire.
Later when I was done I went over to Radio Shack and bought a serial cable (my laptop I use has a serial connection on the back). I follwed these instructions for my install... http://www.evoxforums.com/forums/showthread.php?t=21747
Here is a screen shot of what I have selected. Also I went into Device Manager and tried changing the Bits per Second to match what is shown in Evo scan as you can see whn the car idling my a/f always shows 0....
Later when I was done I went over to Radio Shack and bought a serial cable (my laptop I use has a serial connection on the back). I follwed these instructions for my install... http://www.evoxforums.com/forums/showthread.php?t=21747
Here is a screen shot of what I have selected. Also I went into Device Manager and tried changing the Bits per Second to match what is shown in Evo scan as you can see whn the car idling my a/f always shows 0....
![](http://i30.photobucket.com/albums/c343/vwjeff/temporary_zpsaf2bd38f.jpg)
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Your right I know I screwed up. So I guess now I am gonna wiring it into the rear o2 heater curcuit. However there is a new problem, the 2012 has different color wiring
From what I can gather I need to wire into pin 3. Also I dont understand the mathmatical equation that needs done to the ecu
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Mellon Racing
Evo 'For Sale' Electronics / Lighting / Audio
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Jun 19, 2011 08:00 AM