I'm not a Digifant pro have included words such as "likely" so take this for what it's worth LOL but descriptions of engine management systems here: http://www.a2resource.com/electrical/management.html vs a description of Motronic for Mk3 VW's in my Bentley manual which makes specific mention of Motronics' "adaptive" aspects, likely suggest that Digifant II is not adaptive. e.g. unlike Motronic, Digifant is not able to compensate for things like minor vacuum leaks due to normal wear at throttle body. e.g. Motronic and newer versions likely have subtle control over the ISV or motorized throttle body (OBD2) so either can compensate for minor differences in air to fuel at idle. IOW Digifant is likely not designed to "learn" or adapt to a given AFM. The AFM CO adjustment likely only really affects things at idle. As I'm sure you know, it's an air bypass within the AFM designed to be used at idle when the vane is mostly closed. IOW, with the throttle part way open, thus AFM van part way open, most or all air is passing through the main part of the AFM. Neil. On 2/7/20, Alex MeVay <alex@mevay.org> wrote: > Two bonus questions for any Digifant II pros: > 2. Does Digifant II have any long-term learning/adaptation to the fuel > map? When I replaced the AFM in 2018 and did the idle CO as above, > the engine first ran a little rough (i.e, blip the throttle for a > shift and get a misfire), but then got smooth over the next few days > or so.
-- Neil n VE7TBN 1988 Westy 50º ABA swap: https://tinyurl.com/yap5hpwt 1981 Westy 15º ABA swap: https://tinyurl.com/y9n4xob8 VAG Gas Engine Swap Group <http://tinyurl.com/khalbay> |
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