(WARNING DO NOT SWITCH DRIVE MODE! WILL BREAK!) Launch Control, Down arrow, then hold space until rpm is at 4,500. Release the down arrow. Change gear, left arrow is downshift right arrow is upshift. K/M change speed unit. R refuel while the engine is off ACC or off.
About the v8 sounds I made them much louder tweaked the turbos and stuff made the idle louder and stuff overall the sound is better in this version.