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      05-08-2021, 07:03 PM   #18
hassmaschine
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Drives: "NBO" 330i
Join Date: Jun 2014
Location: earth

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They did have different exhaust, which could contribute, but the engine itself is identical. I've looked at the calibrations, it's not obvious what the exact changes are for power, because there are many, many other differences between different models (that have nothing to do with extra power). Really, it wouldn't be any better than getting a custom tune on a 330i - you're going to be doing the same things. VANOS, torque maps, valve lift, fuel, etc.
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