Put the gear shift in Neutral, then highlightthe indicated car at the selection screen. Change gears as indicatedto unlock the corresponding bonus car, returning to Neutralbetween gears.
Highlight the Mazdaspeed6 (GG3P). Then, shift to 6thtwo times, 5th, 4th, 3rd three times, 1sttwo times, 2nd, 3rd, 4th three times.
On the cars selection screen, go to the following cars and use the gear-shifter in this order (make sure to put the shifter on Neutral before you go to the selected cars!)
When you transfer your card from Maximum Tune 3 to DX, do twenty story modes without losing once to get the meter