The presence of a knock sensor doesn't enter into it. Both Digifant I and II can have knock sensors. Both I and II can also lack knock sensors. If the compression ratio of the engine needs it it gets it, with either system. That Jetta Bentley shows knock sensor on both I and II. 1.8 w/10.0-1 CR Meanwhile the Fox Bentley shows knock sensor on neither. 1.8 w/9.0-1 CR Both types are from later cars than 86 when Vanagon Digifant came out. I had an Vanagon 022 ECU once that said Digifant I on it. Digifant II came out next, on the inline engines. Why VW later confused things by calling the latest most complicated version of the inline system Digifant I is a mystery to me. Mark
Robert Ueltzen wrote: > According to my Bentley for 86-92 Jetta,Golf, and GTI, the Digifant II > has a throttle position switch, and no knock sensor like the Vanagon. > The Digifant II also has a Hall Ignition Control Unit. Digifant I has > a throttle position potentiometer, an ignition coil power stage, and a > knock sensor set up. I believe the Digifant I system was used for the > California cars in 1991, and 1992. > > |
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