Forgot to mention that dyno numbers are a fact. Just watch the episode. 35- 40 Horsepower. That's substantial. Maybe not necessary in my case but still substantial.
We carefully choose our parts, build our engines with utmost care and cost for performance, and a fan robs us. The numbers don't lie. How much does it cost us for an instant 40 HP gain? Sounds stupid I know but somehow it matters.