Quote:
Originally Posted by Smiley1175
On the 1M it's just a throttle mapping which changes. Doesn't give any more power. You can feel this when going WOT. Playing with the button will make zip difference.
Hold part throttle and press the button and you'll feel a surge, just as if you'd stabbed the accelerator, ie it just gives more throttle for same pedal travel.
Sadly it doesn't really do much else and not something I use all that much at all on a daily basis.
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It doesn't sound as though you read the information from BMW? Since it describes how it changes the waste gate and not just throttle position...
In mid range operation is significantly changes the available boost available to the engine at any given point. It' pretty easy to feel this.
I use the M button 99% of the time.