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      03-17-2011, 09:36 PM   #2
ddc9999
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Drives: bmw
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http://www.sae.org/automag/techbrief...1-114-1-17.pdf

this link might clear up some stuff. The first article is the one I'm referencing. I also think I messed up when I said DI and low rpm, and port at higher. It's always using both, but the ratio of how much of each system is used is dependent on rpm.