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I wonder how long it takes the engine to heat up the O2 sensor to operating temp? Even though youre starting with a warmer engine, it still wont kick out of warmup mode until the O2 sensor is up to operating temp, and warmup mode is where a lot of loss is. No TCC, default fuel maps. Ive never tried a block heater.
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Winter daily driver, parked most days right now
Summer daily driver
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