Digijet - Digifant

[Peter Gargano]

Bernd Felsche wrote:

> Cylinder-selective knock control is available on all Digifants, not
> just the supercharged ones.  This is documented in several SAE
> papers presented by Volkswagen staff in the late 1980's. The
> supercharged ones had boost control under persistent knock.

I take it that selective knock was handled by timing alone,
or did it include mixture too? Was this in hardware, or
just software (GM do timing in hardware)? Do you have an SAE
reference, or a URL?

TIA, Peter
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