Press T during game play, then activate the following cheats by entering the corresponding codes. Note: Only the winner of the previous run can enable the codes:

CHEAT FUNCTION - CHEAT CODE
Gas items now give 4x Turbo - Cast MaxGas
Food items now give 4x Stamina - Cast MaxEat
All power-ups in every crate - Cast MaxPup
All bullets do double damage - Cast MaxGun
All TNT does double damage - Cast MaxTnt
Disable all bounties - Cast No Bounty