Thank you for the explanation, however I think I was looking at where the phrase "power adder" itself came from and what made it a point of contention in the thread. I have long understood the science side of it, but I couldn't understand why what was and wasn't a power adder wasn't agreed upon. From digging around a little bit, I found that sanctioned drag racing rules define "power adders" as a Turbocharger, Supercharger, or Nitrous Oxide. This really explains the back and forth more. If one took the phrase "power adder" literally, it could be anything like a camshaft, intake, decking the block, etc that when utilized the engine made more power. Whereas others in the drag racing community may see a "power adder" as only a supercharger, turbocharger, or nitrous oxide. Seems to boil down to semantics in this case.