I think that speed boost isn't actually a FAST BALL,I think that it just means more effort by the bowler.
But what really irritates me is in the BLC instruction manual(page 18) it sais that if u use the speed boost button to much it leads to a no-ball being bowled.
Now I have never had a no-ball in any match I've played,but there is commentary for a no-ball and also an animation for the no-ball umpir signal; now obviously they left this feature out at the last minute, but why do they still mention this in the manual?