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| AEM http://4g61t.org/forum/viewtopic.php?f=57&t=38898 |
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| Author: | win0857 [ Thu Jun 12, 2014 8:37 pm ] |
| Post subject: | AEM |
I am building a AWD summit, 4g63t. I bought a used AEM and a 1st gen harness. Since the engine/harness was a mass air and the AEM is a M.A.P.(speed density) what do I need to hitch it up? Is the a patch harness or do I use wires in the factory harness. I also know the I.A.T. sensor was part of the original MAF so do I have to break those wires out of the MAF plug to wire to a IAT? What IAT sensor should I use? Any help is appreciated!! I also have to say this has been tough project for me (I got very picky with this vehicle and have been working on it for 6 years) and hats off to you guys who do this in a short time!! I did post a build thread back in 2007 but the updates have been too slow to post. Thanks , Mark |
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| Author: | installer88 [ Thu Jun 12, 2014 11:18 pm ] |
| Post subject: | Re: AEM |
The easiest way on the 1g is to wire both iat and map into the old maf section of the harness. Iat and ground for it are simple. The map sensor uses +5volts, ground, and signal. All are found in the maf plug. Worst case you just have to move the pin for maf to the desiccated map input. Hope I described it well enough. Sounds simple at least. |
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| Author: | win0857 [ Fri Jun 13, 2014 8:18 am ] |
| Post subject: | Re: AEM |
So I am assuming the AEM, plugged into the factory harness, is using the stock wiring. All I have to do is cut the MAF plug of and split the wires that goes to the 2 sensors. Correct? |
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| Author: | win0857 [ Fri Jun 13, 2014 12:27 pm ] |
| Post subject: | Re: AEM |
What about the wideband sensor? What wires do I use to make it work? |
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| Author: | installer88 [ Fri Jun 13, 2014 1:43 pm ] |
| Post subject: | Re: AEM |
Yes on the maf plug. As far as wideband, does your aem have the built-in controller? If it does, it should have it's own harness. If not, take the signal out from your wideband controller and wire it into the primary o2 signal input. |
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| Author: | LILEVO [ Sat Jun 14, 2014 7:58 pm ] |
| Post subject: | Re: AEM |
Read the aem pdfs and fsm. Everything is in there on how to wire it. |
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| Author: | tsi20gawd [ Sun Jun 15, 2014 3:30 pm ] |
| Post subject: | Re: AEM |
AEM does NOT use the map input to the ecu via the maf harness. It uses the Diag plug for setting your ignition timing. You pull the power and ground for the map and the AIT from the maf plug. Bryan |
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| Author: | win0857 [ Thu Jun 19, 2014 6:47 pm ] |
| Post subject: | Re: AEM |
Quote: AEM does NOT use the map input to the ecu via the maf harness. It uses the Diag plug for setting your ignition timing. You pull the power and ground for the map and the AIT from the maf plug.
Where on the 1G engine harness is the diag connector? What is the wire color or what does the plug look like? Bryan Thanks, Mark |
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