Audi A8 Supercharger Calculations for the ABZ Engine The following pages are part of a mad scientist idea I had to supercharge my 97 Audi A8 with the 32 valve ABZ engine. I never executed it, I figure it would be about $6,000.00 to do it myself. I had spec’d out the Rotrex blower. I was going to increase the injector size and create a pressure ratio of 1.4-1.5 to achieve peak HP numbers of 425 to 450 HP. I was not going to change the engine management system; it is very difficult to do with the Bosch systems. Considering it is a centrifugal blower, a rising rate fuel pressure regulator would be used. It would be tuned on a chassis dynamometer using a wide band O2 sensor. Feel free to use this information for your own supercharger project but please give me credit where credit is due. The calculations were derived from Corky Bell’s book Supercharged! It is an excellent engineering guide.

Sincerely,

paul@audipages.com

Paul Waterloo 2005 www.audipages.com

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