You're right about one thing.....I love to debate. And when I see someone promoting missinformation I have no problem setting them strait. I'd expect the same were I in need of correcting. As far as the other half of your statement.....please explain, how am I bias? I have no stock in Vortech or anything to gain by promoting their product? Take a look at my own personal power adder. I've got a roots based Positive Displacement blower strapped under my hood. Which is a more similar set up to your Kenne Bell, than it is to any Centrifugal. ......so much for that theory. Without getting too technical in the explanations……Three major reasons.....volume, ease of installation and affordability! A comparably sized Centrifugal style blower needed in order to support that kind of horsepower levels would be physically too large, awkward and heavy to bolt to the front of an engine….not to mention far to expensive. BTW....a 14-71 is big block specific application. It doesn't exactly apply to 4.6L modular engines. How am I not being careful? I didn't make any accusations; I made a simple mistake with regards to a specific detail of your build. Would an apology for incorrectly remembering your head configuration make things right? No sweat....you have my heart felt apology that I was under the impression that your heads were ported. It still doesn't change the fact that the rest of your mods are the reason you're seeing less boost on your gauge and more airflow, in comparison to a stock set up. And that you were wrong in your conclusion that horsepower made at a specific boost level doesn't change, regardless of the modifications made to the rest of the build. Funny I don't see you correcting yourself on that one, or addressing the fact that I'm right and you're not. If you'd care to deny it further, I'll be more than happy to continue the debate. I'm not going to be the one looking like the fool for carrying on a flawed point. Or you could do the right thing and cut bait by admitting you were "misinformed". If you believe my reasoning is so flawed, please feel free to post it as an open question to the board and see what others have to say about it! I will agree with you, that is a debate that could go on forever, but there are probably several hundred members on this board with both styles of blowers that might disagree with your definitive designation for their supercharger. I know a lot of Centrifugal users that are just tickled pink with blower set-ups for street use and just as many that love their Kenne Bells at the track......but this is of course your opinion and you're entitled to it just the same. And tell me, exactly what pudding will it prove.....that two completely different cars, with different blowers, engine configurations and modifications will make different horsepower levels? I can tell you right now, we don't need to wait until this spring for you to fill us in on that one. That's a pretty widely known fact as it is.