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Just picked up a 530D G30 2018 xdrive last week, and it's a clean car with 55k mileage and full bmw service history. The drive is amazing compared to my last 420i, however I've noticed the speed isn't what I thought it would be? When I floor it, I get less than 230BHP with 500Nm of torque on the sport display and it's doing 0-60 in about 6 seconds, (should be 5.4) and now I've gotten a remap stage 1, and it's still only pushing to 260BHP (should be 330), can anyone suggest what might be wrong? I'm getting it dynod tommorow anyways