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I would believe he meant a drain occurring all the time whether it be small or large, not on/off (i.e. intermittent or...momentary :). The electric ones spin at a very high rpm. Read their stats on the web pages. The Turbo-Zet does vary the rpm whereas the e-RAM comes on only at full throttle. I'm kind of liking the idea...for both cars :) Toby Erkson air_cooled_nut@pobox.com <-- Please use this address for email '72 VW Squareback 1.6L bored and stroked to 2.0L, Berg five-speed '95 VW Jetta III GL 2.0L, P-Chipped, Jamex sport suspension Portland, Oregon, http://www.icbm.org/ >-----Original Message----- >Andy=> Superchargers don't have momentary drain, they are constant. > >Hold on. Even the simplest belt-driven supercharger varies in >speed with >the engine. The supercharger on my Stude also has a >centrifugal booster >for high rpm. > >If it doesn't vary with engine speed, it becomes an impediment to >airflow at higher rpm. That's why an electric one is a tricky business >-- you have to get rpm information to it somehow and it has to be able >to respond. ------------------------------------------------------------------- List info at http://www.vwtype3.org/list or mailto:help@vwtype3.org