my vote would be the po changed the eha to try to gain the most performance.suggest you lean the eha down and then compensate at the 3mm[you said one way it wouldn't run.i think this will give you closer readings between idle and 2000rpm.

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David S Poole
European Performance
Dallas, TX
4696880422

"Fortune favors the prepared mind"
1987 Mercedes Benz 420SEL
1988 Mercedes Benz 300TE (With new evaporator)
2000 Mercedes Benz C280
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