[ATL BRZ]

Originally Posted by Adeets

As it stands I'm not seeing the hype, looks like a vortech with a smaller impeller but higher revs. And there numbers on 91 (235 according to that dyno refrence on the other thread) seems pretty much the same output. Am I missing something?

Via Kraftwerk's article: "Not All Boost Is Created Equal"

Gear Driven Centrifugal Superchargers utilize a centrifugal compressor section, but because of their limited rpm capabilities (-55,000rpm max) they must oversized impellers to achieve the desired amount of mass air flow. As a result, these superchargers are far from optimal and generally suffer from weak low-end torque. Furthermore, like positive displacement superchargers, gear driven centrifugal chargers are highly noisy.

Rotrex Centrifugal Supercharger presents a unique solution that combines the best aspects of supercharging and with those of turbocharging. Unlike any other supercharging solution, the patented Rotrex traction drive allows it to operate at sufficiently high rpm levels (up to 240,000 rpm) to take full advantage of modern centrifugal compressor and impeller design. The result is a supercharger that offers better low-end boost than other centrifugal superchargers, better top-end boost that positive displacement superchargers, and better more predictable throttle response than turbochargers. Also unlike turbos and positive displacement superchargers, the Rotrex supercharger does not suffer from heat related issues. Because the Rotrex runs cooler (lower thermal stress), higher compression ratios and advanced timing can be run thus further optimizing response and power.