Mine will occasionally hit the rev limiter in 1st gear, however when I don't hit kickdown from a start I rarely get past 4500 in 1st even when the car is floored. This doesn't happen in any other gear though

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2006 BMW X5 4.8is Lemans Blue/Beige/Dark Maple
-Nav, Comfort Seats, Heated Steering Wheel,
Rear Airbags, AUX Input
2009 BMW M3 Space Grey/Black/Carbon
-all options