According to AEM
LINK to Series 2 page there are 12 injector drivers.
What's the plan for controlling both systems in the D4S? The stock setup is heavily dependent on DI (as @
mad_sb has highlighted in the BRZEdit thread), but under certain conditions it uses SEFI.
I'm just curious what kind of structure you'll be adding to the AEM framework to accommodate this. Independent (parallel) fuel systems would work just fine, but that sounds like a bear to tune properly. If AEM allows you to add variables and build your own functions, it would be easy as cheese to recreate the factory blend (since the tables have been spoiled).