Blowers

Take a look at this website, it gives an excellent overview of the different types and brands of Superchargers http://www.motorsportsdigest.com/tech.htm I have a Vortech and have been very happy with it to date. The Vortech does not require an intercooler and it seems that the roots type require this to make decent power. Smoke is definitely correct in saying that a custom tune is required for a centrifugal type of sc, I don't know if this is the case or not with a roots type. I am a case in point. My Vortech out of the box installed cost me $4000 and I just dyno'ed at 313 rwhp and 370 rwtq. I'm going in for a custom tune and I'm being gauranteed a minimum of 385 rwhp after the tune (that's about 450 hp at the motor) and that's without an intercooler. My recommendation is to ONLY have the SC installed at a shop which has a floor dyno and will install the Vortech with a Diablo chip and a custom tune(I'm having my Superchip replaced with a Diablo tomorrow). Good luck and let us know what you do.