Injector question

[HaLo]

I just got these injectors from someone on Freshalloy. He claims these are Nismo 550CC injectors. The second picture is to show the 4 nozzle spray pattern. Would you agree these are 550cc? I flow tested them at 450cc but I believe the test was flawed. Opinions?

http://www3.sympatico.ca/oktayy/5501.jpg
http://www3.sympatico.ca/oktayy/5502.jpg

[AceInHole]

They might be 440cc injectors of an S15 SR??

From what I know, the stock 270cc injectors are red topped and the 370cc injectors are blue topped.... you might be able to find some documentation further up.

The 4 holes on the nozzle are pretty standard. Both my 270cc injectors and 370cc injectors are like that.

[HaLo]

480cc from the S15 SR are black (i think so).