credit score simulator

Increase credit limit affect credit score?

I have an account with the help of privacy through a U.S. bank has a "what-if" simulator where you can see how certain activities may affect your score. I recently had a credit limit increase $ 25 in one of my credit cards (there is a very low limit, and trying to improve my credit card), but every time I put it in the simulator, if my score 4 points. I do not understand why! Credit limits is better? I also give more gap between what we charge what I have at my disposal. Can anyone explain why this would have a negative impact?

I think what we should concentrate on just make sure you pay your balance in full each month (if possible). Directed by one month, the balance months hurts your score. Simulators if what I've seen are not entirely accurate. The one I have to my credit card is not in any way. Good luck:)