Vacuum pump

I am not having any problems at this time. But in the long term People that have much more experience with alcohol as a fuel than I have are highly recommending that I install one. They say that less maintenance on the engine and less frequent oil changes will be needed. Also if it frees up some hp that would be a plus. This is why I'm asking for information from people familiar with this subject.
I do know this.....alcohol "washes" more than gas does, if that makes sense. There may be some truth in what they're saying, but heck, until I saw an issue, I'm unsure I'd make a move.