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]

@rick_cv

this probably answers the question on ECU compatibility with other VW L jets.
from ratwell's bus website.



there is a bit of a mystery as to whether there ever was a 74 bus for california with L jet, despite CARB documents with approval for one.
but the california air resources board approval was granted for one.
manual only with the 022 906 021F ECU.
so who knows.

but ratwell says for 75
there are two different bus ECUs.
022 906 021H is for the federal bus with a manual gearbox.
022-906-021J is for the federal bus with an auto box.
i'm guessing the ECU must be different for manual v auto and is not interchangeable.
if they were they would just list the same ECU? (IMG:style_emoticons/default/confused24.gif) so must be something different in the mix.

i can tell you that the 412 one listed as 022-906-021F was only ever in automatic gearbox equiped 412s. the L jet was only installed in auto gearbox 412s.

using bus logic of ratwell that F ECU isn't going to be good for a 74 1.8 (or in your case a 75 using 74 parts).

i do know my aussie colleague @nihil44 up in brisbane has been having a go at assembly of an L jet system on a 76 model he has using various bus parts, ECU ?, AFM? etc but i don't know if he has achieved success yet. he was having some trouble making it run properly.
if he reads this he might give you his thoughts.