Asphalt 8 is a phone app, cheat engine is for computer, you must be some amazing programmer if you managed to create a version working for a phone game. Cheat engine is used to view and edit the memory of a program, most phones would prevent a program from doing such a thing. In addition, phone apps especially Gameloft games such as Asphalt 8 have become much more protective of programs that can help you cheat/hack, this is because phone apps focuses on in-app purchases, if you can hack in the game, the game developers do not make any money. AND if the game is client-server like tmanzz122 said, any changes to made to the client (which is your game) will cause the server to refuse connection with you.
I know of at least 4 programs that are like CE on Android including CE itself. On a rooted device you can pretty much do all the stuff that works on PC.