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How to hook AEM wideband into ecu???

Old 09-04-2008, 06:25 PM
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Default How to hook AEM wideband into ecu???

I'm getting ready to start datalogging my tune when I put the next motor in my car. I lost all the paperwork for my (AEM) wideband. I know that there's 2 output wires (blue and white). Which one is the wideband signal and which pin do I connect this to on my p28 ecu? Also are there any resistors I have to cut on the ecu board? I'm running crome 1.5 if it makes a difference, any info would be helpful thanks
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Old 09-04-2008, 06:58 PM
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Default Re: How to hook AEM wideband into ecu???

D14 is the input to the P28

http://www.lukekailburn.com/lc1.html is a good writeup for the LC-1 might help you?

No resistors to cut if you don't need the ecu to read more than 3.8 or so volts. otherwise there is a mod that will let you read the full 5v on pgmfi. Most people using the lc-1 adjust the output to be below 3.8v

You need to disable the O2 in the code through crome or it won't like the wideband input.

Dont' know which wire from the wideband, you'l have to search aem's site for that
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Old 09-04-2008, 11:43 PM
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Default Re: How to hook AEM wideband into ecu???

j12 should be crushed or removed. take the white wire connect it to the 02 input on the ecu if you look at the ecu with the conectors up. Its the connector on the left the bottom row 5th wire in from the left it was white on my buddys 95 ex coupe.
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Old 09-04-2008, 11:57 PM
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Default Re: How to hook AEM wideband into ecu???

also p2 has a voltage range of (1-2) p3 emulates autoronic wideband with a voltage of (0-1) p4 is a non linear nernst cell calibration with a (0-1) voltage i think p3 and p4 are okay for the ecu to read in closed loop dont quote me though
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Old 09-05-2008, 01:21 AM
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Default Re: How to hook AEM wideband into ecu???

Originally Posted by lilpooh21186
also p2 has a voltage range of (1-2) p3 emulates autoronic wideband with a voltage of (0-1) p4 is a non linear nernst cell calibration with a (0-1) voltage i think p3 and p4 are okay for the ecu to read in closed loop dont quote me though
Please explain what p1,p2,p3, and p4 I'm having a slow day :1
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Old 09-05-2008, 06:09 PM
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Default Re: How to hook AEM wideband into ecu???

i just did explane p0-p1 are wideband output the rest are p2 is somewhat narrow p3-p4 are narrow then hae a download for it on aem
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