In a nutshell: It's a bad idea, it would be extremely hard to tune, would provide very little performance gain, and would severely decrease the life of your engine. Many people have tested it and debated it's usefulness, but the simple fact is that for the money you might aswell buy a larger engine if you want more power. There is a reason you only see them on show trucks.
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You know you're doing it right when you try to re-read your own posts and can't half way understand what you were saying