ECU part numbers for 1975 L-Jet, looking for info Options

[rick_cv]

Trying to piece together an L-Jet fuel injection system with the parts I currently have. Missing the ECU and have a 6 pin AFM. Does anybody know what the correct ECU part number is for a 6 pin AFM? The early 1974 411 has part number 022906021F and the going rate is 1/3 the price of a 1975 914 unit, part number 022906021G. A 1975 bus ECU typical part number is 022906021H. These are all indicated for manual trans but not sure which AFM they work with. Thanks

[wonkipop]

ok - i took a look at 914 parts catalogue.

so its the CARB document has the parts #s scrambled on AFM and ECU.

the 914 factory manual agrees with the parts catalogue.

the ECU is 022 906 021 G.
the AFM is 022 906 301

so what you say is correct if we reference the CARB document and make the correction that the AFM is 022 906 301 and the ECU is 022 906 021F for a 412 with L jet.

i can only take a guess at this but the F version is the early version superseded by the G?
(maybe?).
the 412 1.8 L jet went into production 3 months before the 914 with the 1.8 L jet.
so likely had first versions of everything. by the time they got to the 914 they had already got to the G version of the ECU?

but the only way to verify this would be to have a 412 parts catalogue USA version.
if it is anything like the 914 parts catalogue it will list superseding variations.
unfortunately the only catalogue i can find is on the VW classic germany website.
this is the european parts catalogue and does not cover 1.8 L jet for 412s.

but if you asked me to take an educated guess its possible that the F unit works.
CARB are listing the 914 as running that F unit in the emissions approval docs for california. so its possible i guess that very early 914 L jets did have it?

the differences between the two engines looked to me to be mostly in the way they set them up for emissions. the 412 ran EGR in 74 and i think it did not have the same distributor. but i'm guessing the rest of it is pretty much the same.