Understood. I was thinking of doing the same with my MAF and IAT sensors, but I wanted to see what the lambda reading was beforehand. Forgive my ignorance, but do they have meters at Radio Shack that measure "duty cycles"?

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1993 400E, 256,000 miles (totaled)
1994 E420, 200,000+ miles
1995 E420, 201,000 miles