but the roots style will give you full boost at really low RPM which is better for everyday driving.. the centrifcle is cool for the track.. no boost under 3000 RPMS..
Lets not turn this into another centrifugal vs. roots battle. Just realize that there are advantages and disadvantages to both; however, both will hold their own at the track.
Again the common twin screw misconception...if you dont want torque you dont have to with ANY Supercharger...just dont go WOT...but when you do with a kenne bell your car is going to take off with instant boost off idle.
BTW, cobra killer is working on a tune and kit for a kenne bell also. T&J is now a dealer for Kenne Bell