[QUOTEfollowing question:
*****Is there any objective data on the flow rates between the 015 stock US injectors, 009 Euro injectors, and 057 3.6 965 injectors?
It seems that the 009 Euro injectors and 057 injectors are thought to flow more than the US stock version but how do they compare to each other?
[/QUOTE]
On the difference between stock US 015 and 009 i can not say anything...
here can not made a reliable statement for a solution, each system must tuned for themselves.
In the Forum there are measurements between 017 and 057 injectors:
I have made measurements with a buddy between 017 and 009 Injectors =
no difference (unless the difference in price).
Bosch injectors Porsche Turbo
Porsche 930 Turbo 3.3 ROW injector 0437 502 009 Bosch number / 930 110 225 02 (Pet)
Porsche 964 Turbo 3.3 ROW injector 0437 502 017 Bosch number / 931 110 225 00 (Pet)
Porsche 964 Turbo 3.6 ROW injector 0437 502 057 Bosch number / 964 110 235 20 (Pet)
Injection quantity 009 to 017 is equal (measured with 2 different warm-up regulators and Full Heads (EUR). The opening pressure of 009 and 017 are equal too 7.2 to 8.3 bar
Porsche say, the 057 nozzle has about 5% more injection quantity. It can easily be the same or a higher injection quantity with 009 or 017 Injectors with a tuned CIS System. (modified Full Head / Adjustable WUR / RPM CSV Kit)
Difference between the injectors can be up to 10% (say Porsche)