Go on any stage and while U are accelerating press the control stick down. (if U do it for too long, you will fall backwards.) You can also do this to change the angle of your landing after you make a AIR.
To get turbo speed you have to do a lot of tricks in uk stunt arena after you have done a few tricks look at the bottom right hand corner and there will be pink stuff when u have enough press the Z button and you will use turbo but when the pink stuff runs out it runs out (oh ya u have to land the tricks and get the points).
To get a jump on the opposition and the championship if you have enough moola (cash) you can by a 250cc bike (if you are in the 125cc championship) or a 500cc bike (if u are in the 250cc championship) you will win practically the races with your new bike and complete the game GOOD luck ;-)
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