Roadkill Codes -

Weapon power-ups respawn immediately:
After pausing your game, by pushing , highlight the MAP option. Now push Triangle, (x2), Triangle, Square, Circle(x2), Square, , Square, Circle, Triangle. You will hear the sound of an engine if you have entered the code correctly. You still need to find where the original weapon power-up appears, then collect it again. It will also cause some weapons which you have not unlocked to appear next to your garage. However, not all weapon power-ups are next to your garage. They are usually nearby, but on a ledge or around the block.