At the end of this page, there are Game Shark codes.
Tony Hawk's Pro Skater 3 Online
Enable Code (This code must be on always.)
FA1A6DD5 32D57A2A
Turbo 1 (You move very fast.)
2AE3103B 3FFFFFFF (7 F's)
Turbo 2 (You move extremely fast.)
2AE3103B 41111111 (7 1'S)
Turbo 3 (You move so fast, the screen shakes.)
2AE3103B 41FFFFFF
Frozen Online Timer (The timer cannot end. The game cannot finish. The code only works when playing Trick Attack mode.)
2A3B88D9 00000520
2A2388D9 00000520
Tony Hawk's Pro Skater 4 Online
Enable Code (This code must be on always.)
FA72665A 32A621CD
Perfect Manual Balance
2A6F4647 BFFFFFFF (7 F's)
Perfect Rail Balance
2AFF4647 BFFFFFFF (7 F's)
Multiplier Modifier
2AC345E1 0001869F
You can adjust the "0001869F" part to anything you like for bigger or smaller multipliers. For example, "0000010A" gives you a multiplier of 267.
Tony Hawk's Pro Skater 4 Offline
Input these cheats in the options menu of the game.
Perfect Manual Balance: mullenpower
Perfect Rail Balance: ssbsts
Unlock Mike Vallely, Jango Fett, and Eddie: homielist
Unlock Daisy: (o)(o) [That's an "o" as in "orange".]
Unlock All Movies: watch_me_xplode (You must include the underscores.)
Game Shark codes (Versions 1 & 2)
Tony Hawk's Pro Skater 4 Online
These codes do work. They're being used online.
Enable Code (This code must be on always.)
0E3C7DF2 1853E59E
EE952A8E BCD25932
Perfect Manual Balance
DE784452 BCA99B83
Perfect Rail Balance
DE7844C2 BCA99B83
If you want more THPS4 codes, click here.