Tahoe, the salesman let me gun both X5s on the on-ramp of the freeway. The tach went to 6000 rpm. I see your point about break in, but I don't think it would be significantly more apparent after several thousand miles. As previous post pointed out, it's only 5% increase in hp and 10% in torque. Pretty weak for $1600. You're paying mostly for the BMW warranty which isn't saying much for such minimal increase in power.
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