http://pt-tuning.com/technical_Info/SC-tech.html

http://www.musclecarclub.com/library/tech/forced-induction.shtml

http://www.fefcholden.org.au/techinfo/supercharge/norman1.html

http://www.holley.com/HiOctn/ProdLine/NOS.html

http://www.superchargersonline.com/techarticles.asp

http://www.howstuffworks.com/turbo.htm

http://www.turbo.co.jp/en/company/turbocharger.html

http://www.ultimatecarpage.com

http://www.overboost.com

http://www.so-calspeedshop.com/nos/history/history.html