Oh yes, I don't know where you read that the ice will help. The chemical process of turning water into vapour uses a huge amount of energy, like hundreds of degrees. It takes the energy from the charged air. That is what lowers the intake temp. Any one feel like calling bulls*** they used it in formula 1 in the turbo cars of the 80's. And it worked so well they banned it.
What will help your drag times / mph is drag radials. If you're spinning uncontrollably in first gear, you need to add grip not more HP.