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Originally Posted by ivymike1031
Expense, limits of in-cylinder mixing (needs more swirl for one), requires higher injection pressure, allows less time for flame propagation and slower flame propagation. There are OEMs working on it, and there are some production vehicles that use it.
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Those are all things that can be worked around, do you know somthing that would be detromential to it?? What production cars use this kind of injection???