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

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