PSI C-Rotor Supercharger Image credit: ERDEngines.com

When it comes to making gobs of horsepower, getting air into the engine as quickly and efficiently as possible is the name of the game- and in drag racing, brute power is what its all about.  When racers stop working to advance technology and push the envelope to make more power and go quicker, is the day the sport dies.

The screw supercharger was an advancement upon the roots blower design – being around drag racing for ages.  For extreme racing applications,  PSI Superchargers is a name people know.  Top Alcohol Funny Car racers have been using them for several years, and virtually anywhere that they are allowed to be run – which isn’t many places – someone has tried it, and successfully might I add.  In fact, the units make so much power that in Pro Modified circles, they are now virtually off limits for quarter mile racing.  They are now the e-ticket in ADRL Pro Extreme and that arena is driving the advancement of these superchargers.

Darren Mayer Performance Engineering is working to take the screw supercharger technology to a previously unthinkable level and send all of the turbocharged and nitrous racers home.  Mention of the new unit at the DMPE website is limited to a tentative availability date of February 2011, and the current status of research and development phase at their testing facilities.

The early, unsubstantiated report on the new blower indicates that it will displace 12.8 liters compared to 7.8-liters for the PSI, and dyno testing numbers show it produced 80-82 psi; roughly 28 more pounds of boost at the same overdrive of PSI’s C-rotor supercharger. Needless to say, this thing could well make for a David vs. Goliath battle with even the largest of twin turbocharged powerplants.