Premium octane fueling maps

[Mihnea Cotet]

The Motronic is indeed adaptative and once it has
"sensed" that full ignition advance can't be reached
without knocking for a few times (you won't notice the
knocking, we're talking of a very subtle level of
knock here), it will use the retarded maps. I think it
will always try to see if fully advanced maps can't be
used "just in case" but I'm not 100% positive. Anyway,
filling an almost empty tank with 92 or 93 octane
(american octane) and probably disconnecting the ECU
for a few minutes will help get it back to fully
advanced maps, as disconnecting it will erase its
adaptative memory.

HTH,

Mihnea
--- JShadzi at aol.com wrote:
> --
> [ Picked text/plain from multipart/alternative ]
> I'm not positive about the 3B maps, but my intuition
> is that the Motronic has
> a certain level of "adaptability" and isn't as
> simple and discrete as the
> earlier CIS3 system to switch between one map or
> another, there is more
> complexity involed.
>
> Javad
>
> In a message dated 3/5/2003 8:45:39 PM Pacific
> Standard Time,
> suffolk.associates at verizon.net writes:
>
> > So back to the 3B:
> > Does the fueling map reset after each start or is
> there
> > some "proceedure" I should follow?
>
>
>
>


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