Benzmac: I found your Lambda article in the tech archive most interesting. I watched a tech do this at a club technical session a few years ago and he set the lambda by using only the voltage reading. For those of us with a simple digital voltmeter, is there a way to do this properly. My foggy memory seems to indicate that he used something around 3.5 volts. Part 2 of the question is that if it is possible to do this, is the reading altitude sensitive? ie: is the setting the same at sea level as, say, 8000'?

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'88 300CE, 52,000 mi