From http://www.superchargeronline.com/content.asp?id=20

Quote:

The Whipple Twin Screw Supercharger-
Incredibly high adiabatic and volumetric efficiencies
Positive displacement design
Very flat efficiency curve combined with positive displacement design gives the most achievable torque of any method
Instant boost
A true compressor
Direct drive from the crankshaft
Compact and lightweight design
Virtually silent operation
Low temperature increases during operation
Very little power consumption
Unique combination of low rpm torque and high rpm horsepower due to the screw compressor design
Have the ability to run from 1 to 60 lbs. of boost



So much for SC being inefficient, or not having instant boost. Properly setup, one of these will have INSTANT boost OFF IDLE and low to mid RPM all the way to redline. Which is where most of our cars spend their time at in traffic and everyday driving. I dont think any of us keep our motors at redline all the time. I have not heard of any turbo system that make boost of idle, there is always some lag. If anyone has a link to one, I would love to see it, not just some guys opinion. Im always willing to learn something



-Ken V. 1998.5 SE Praire Tan Zetec ATX psycho_bass@hotmail.com Roush springs Roush rear sway bar BAT struts 17" Millie Miglia HT3 and a ton of subtle asthetic mods