I just bought and installed the Magnafuel 300 pump late last year. While driving a couple days ago, i noticed it seemed louder than i remembered last year. After the 30 minute drive and once back home, I felt the pump. It was very hot, hot to the point it was uncomfortable to keep my hand on it. I called Magnafuel and asked if that was normal for the pump to be that hot. They told me to check it with a temp gun and it should not be over 140* and 130*-140* is normal. Also, not to run for more than 1.5 hours at a time without shutting it off. I don't like that as i street drive alot and this is looking like a very unreliable pump. When it breaks, i will be replacing with something different.