Practically your "stock" 1M is putting down 380+ hp and 600+ nm flywheel, though good news they seem really high; the other dynos I recall in this Forum were in avarage closer to 360 hp and 550 nm torque.
Also that much difference from a 335is is interesting.
Other than a possible high reading dyno or a freak engine from factory, could you tell us what type of fuel was used?
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