Note: I Recommended That あなた Complete All Missions Before Doing This Trick

When あなた Start Mission ''A ホーム In The Hills" あなた Will Back To Los Santos, And Help Madd Dog Taking Back He's Crib, Once あなた Done, Start The 次 Mission Until あなた Meet And Take Sweet Back To フード From Police Prison On Pershing Square. Then あなた Must Take Over Back Your Hood, Once Done, あなた Can Start Gang War, Just Like When あなた Take Over Glen Park, Keep Start And Finish Missions Until Mission Los Deperados, Once あなた Done, あなた Must Take Over At Least 50% Gang Territories Before あなた Can Start Final Mission: "End Of The...

I got these off of a few websites.

SPEEDFREAK: All Cars Have Nitro
NIGHTPROWLER: Always Midnight
FLYINGFISH: Boats Fly
BUBBLECARS: Cars Float Away When Hit
STATEOFEMERGENCY: Chaos Mode
BLUESUEDESHOES: Elvis is Everywhere
SPEEDITUP: Faster Gameplay
CRAZYTOWN: Funhouse Theme
ONLYHOMIESALLOWED: Gang Members Everywhere
BIFBUZZ: Gangs Control the Streets
ROCKETMAN: Have Jetpack
PROFESSIONALKILLER: Hitman In All Weapon Stats
CJPHONEHOME: Huge Bunny Hop
FULLCLIP: Infinite Ammo, No Reload
WHEELSONLYPLEASE: Invisible car
NATURALTALENT: Max All Vehicle Skill Stats
BUFFMEUP: Max Muscle
WORSHIPME: Max Respect...