CIS-E3

[JShadzi at aol.com]

There is a factory manual about the CIS3 system, its outlined in there quite well, but there's not a lot of info out there, and VW's didn't come with such a system.

Javad

>
> > That is correct, but it can do 2 things however, based on knock and
> > temp.  The ECU has within it 2 ignition maps, one for premium fuel
> > and one for standard fuel.  Everytime you start the car it defaults
> > to the prem. fuel map (based on the temp sensor input and ignition
> > restart).  If the knock sensor registers what it considers to be
> > excessive knock (or repeated retard adjustments within a certain
> > amount of time), it will kick back to the regular fuel map which is
> > more retarded.
>
> That's the first definitive description of these "maps" I have heard - I
> don't recall seeing it in the Probst book, but maybe I was skimming.
> Where can I go to dig into the details of this some more?
>
> (I think my 90Q spends a lot of time in the wrong map...
> prolly time to
> get a new knock sensor & clean the combustion chambers, eh?)
>
> --
> Huw Powell
>
> http://www.humanspeakers.com/audi
>
> http://www.humanthoughts.org/