Quote Originally Posted by thomasj View Post
A stock Gen V will make about 20hp more than even the best ported Gen lll on a modded set up. Many things make the Gen V better, larger and straighter intake side. The rotor coating is a big factor creating a much better seal and increasing efficiency. The outlet is farther forward allowing the air to exit the blower much easier. The blower case is machined to fit all the way around the rotors where the Gen lll leaves a gap of free space at the bottom center. You will GAIN boost over the Gen lll even if you run the same size pulley.
Ok...I'd like see how some of these things stack up.

The best ported Gen III vs. a stock Gen V...20 horsepower? Get real. I doubt that much. And last I checked if you have a 3.8" pulley it is going to make the same amount of boost on a Gen III vs. a Gen V...only thing that will make the difference is flow mods.