If you really want to expand your knowledge,
go to Barnes and Noble and pick up Probst's book called "Bosch Fuel Injection and Engine Management" Gives great theory/explaination of how CIS and Pulsed injection work...as well as general diagnosis/repair info.
Nick.
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Nick Shumaker
1982 911SC Coupe
nickshu@yahoo.com
PCA -- Rocky Mtn. Region