Go into the parking of any performance shops,not in the entrance of the shop tho. it only works at one of them so try this at all of them till it works.Now press the following: R1,R2,L1,L2,up,triangle,R1,left,triangle, R2,down,triangle,right,triangle, R1,triangle,square, R1 ,circle,x,R1,L2,R1,L2,L2,R1,R2,R2,L2,L2,L1,L1,L2,L1,L2
Up,triangle,down,triangle,triangle,triangle,circle,triangle,x,start.
Once the game is paused it will save the cheat automatically so if you did it correctly press return and you should hear an engine sound.If you don’t you should try again.Trust me it works.my RX-8 has 600kw and its got 364 km/h top speed.ive Only completed 32%.