Does anyone know the symptoms to faulty airflow meter?I have a 318is (99) and it doesn't really seem to move very fast! It miss-fires at idle and whenever I accelerate hard it feels like I'm towing a truck! When I'm not driving fast it then feels as if the brakes are on. However there isn't a problam with brakes because when the car is moving and not in gear it moves very freely. Any information will be greatly appreciated