I went out in SWMBO's Bravo yesterday and I always press the sport button as a matter of habit, it doesn't do a great deal, but makes the throttle response a bit sharper and steering a bit heavier.

Usually when driving, holding your foot still on the accelerator at any given RPM, when you press the sport button the car accelerates slightly as the throttle response is sharpened, however, I tried it several times and nothing happened.

I know that Abarths and some Alfa Romeo's have a similar button, does anyone have any experience of what may have failed and how to fix it? I don't think there is a leak in any of the turbo pipes as there is no loss of power.

Any ideas/help much appreciated.