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Registered
Join Date: Aug 2015
Location: Cologne / Germany
Posts: 707
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Well, ... then one of the units (ECU vs AEM) does interprete the sensor differently or one of the sensors give different signals at lambda 1.
Or ... if the sensors are installed one on the left side and the other on the right side, then maybe the mixtures/combustions are different on each side, ... but then the reading of the plugs would show it clearly
So ... without going more and more into theoretics ....go to an official emissions check point or service garage with testing equipment and let an official calibrated device do the test. There you can see which one is on spot, .. the ECU or your AEM Controller.
BR
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911 SC 3.0, 1982, black, US model – with own digital CPU based lambda ECU build and digital MAP based ignition control
All you need to know about the 930/16 and 930/07 Lamba based 911 SC US models:
https://nineelevenheaven.wordpress.com/english/
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