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Thanks.
I should clarify my statement too. The SG always assumes your car is in closed loop mode running at stoichiometric air/fuel ratios. It has no way of measuring lean burn conditions OR open loop mode, so it just assumes you're in closed loop all the time. So, the more time you spend in open loop & lean burn, the farther off it will tend to be. Using the adjustment in the SG, you can get it to read closer, but it'll never be dead on.
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