This is the real true way to get an undetected speed hack. I just took other people's work, and i try different methods to get it undetected.
Step #1: Open up cheat engine (Vista right click, run as admin) and attach it to the process called Engine.exe. This is after you opened the game and have joined a game.
Step #2: At the mid-right of the cheat engine, there is a button called enable speedhack, tick it. Set the speed to 50.0 and the rest to 5. Then after you alt tab back in, your should be in the game room, and it should say idle. If not, then exit to game room.
Step #3: Untick enable speedhack and then tick it again. Time does not matter. Set the speed value to around 5.0-10.0, and the sleep to 3.0-5.0. You should be in the lobby, if not, it doesn't really matter!
Step #4: Join a game, after countdowns, it will say unable to join game, just click start game, or enter game, and you will still be able to join,
Step #5: Have fun, but don't piss people off with these hacks.
If you need help: Buddy me! IGN: iNadez
Thank me if this helped u!