People have done it for DECADES on the dirt tracks and shown there is a difference. I've seen it myself.....as have a LOT of people. Yet let one show of "experts" come along and say it doesn't work and suddenly everyone's an expert. Did you ever get it dynoed?
I had not yet, I went on a vacation to Sweden then got hammered with harvest season hours for work before I can get it there. Still plan to, I would like to see 400 HP out of it. Hopefully.