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Originally Posted by jobaker4
NextGen - Do you notice, does your X still downshift and rev the engine pretty high as you decelerate downhill? My 4.8 does this bad whereas my 3.0 never did it. Is this just a function of the "Sporty" programming of the 4.8? It's just horrible, sometimes my rpms will rev up to 4,000 or higher and I'm just going downhill... SO aggrivating!
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That's deliberate, and part of the 'economy' settings used by BMW. It senses that you have no or little throttle and maybe have used the brakes, so it changes down a gear or two to use compression (ie engine) braking.