4) RPM: For guys planning serious builds that want more RPM out of the motor the
piston style DI pump is a major issue, I shouldn't even have to go into detail about why.
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RPM.. This isn't a direct injection issue as much as it is equipment issue. If we can tune these cars ti fire multiple pulses of fuel with in the micro seconds of a single stroke at 7krpm I'm sure it can handle single pulses at 9k rpm just fine. F1 cars use Direct Inject at 15,000 RPMs... yes thats right .. Fifteen thousand rotations per minute.. http://www.formula1-dictionary.net/d...injection.html
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Nice reading comprehension, first of all I clearly stated it's the pump that's the issue. Second the fact that you think a single stroke takes microseconds (that's one millionth of a second btw) tells me just how clueless you are on the topic.
I also clearly stated that many applications benefit greatly from DI, and F1 may be one of them although it took a rule change in F1 for them to switch (and they used to rev higher). Comparing our DI system to that of an F1 car is laughable, we probably couldn't trade our cars in exchange for their DI pump.
I won't bother with the rest of your rebuttals I'm sure any reasonable person can see I already posted the real world relevant test data countering your points that you seem to have ignored completely.
Go do some real world testing and quit regurgitating stuff you read on google you don't know anything about.