I'm thinking of telling the police information that is wrong.
Thats awful. Why would you waste the police's time like this? DO you want to get in trouble?
Maybe, but I don't want them knowing the truth about what happened.
Don't lie to the police, you could get in trouble with them for doing so. You could also be hindering them from solving a crime by giving them false information. Tell the police the truth.
Nah, I'm not doing it anymore since people won't understand that my intentions were good in the beginning.
Whether your intentions are good or not, its wrong to lie to the police. If you don't want to tell them the truth at least don't lie to them.