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Registered
Join Date: Aug 2015
Location: Cologne / Germany
Posts: 707
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Seems his car ist still running the original lambda based k-jetronic and with these models idling at Lambda 1 / AFR 14.7:1 is still ok and smooth. The only drawback with the original ECU is, that idling oscillates a bit within around 50 rpm. As with these old ECUs the 0.5 to 1 kHz swinging narrowband signal will be 1:1 forwarded to the ECUs duty cycle generation.
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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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