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Unless I'm missing something, none of AEM's products can drive direct injection systems as has already been mentioned. That's a lot of money to spend and not have control over the primary form of fuel injection.
One thing that is not widely understood: every solenoid-type direct injector needs to have special current control algorithms according to the characteristic of the injector, engine speed, and fuel pressure. This doesn't affect full load as much as it does around town and regular driving. Otherwise the injector can have a poor spray pattern, unpredictable/nonlinear flow rates, and leakage after injection due to bouncing of the armature.
If any of you are familiar with peak-and-hold low impedence port injectors, the basic principle of operation is the same although DI uses around 60V, way higher pressures, and much more complicated injection timing.
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