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ah right right, do gtr injectors fit in the std rb25 fuel setup and would i need an ecu if i upgrade them? i know that with the rb30's its u haveto change the ecu if u have the injectors. But im not too sure on the rb25 ecu.

Edited by LTHLRB
  cogs said:
According to HPI stock r33 injectors are only 370cc/min and as such run out of flow at around 200rwkw.

really???

i have about 200rwkw with standard injectors and the are nowhere near their max duty cycle...

i think they are only at around 70%...i thought 250rwkw was achievable with standard injectors??

also dont believe everything you read in magazines, rather talk to people with experience...

  funkymonkey said:
aren't SR20 injectors side feed as well?

Yes, SR20 injectors are also side feed. You will need to buy larger Sard/Nismo/Bosch/Denso injectors if you want an upgrade as there is really no standard injectors that are an easy side feed upgrade.

I thought I read S15 injectors (side-feed) were a straight fit on R33 GTST? They aren't 550cc but they are higher than r33 std 370cc, maybe 470?

Also GTI-R SR20 injectors are top-feed and some side-feed SR20 injectors are only 370cc so same as R33, so if you go sr20 make sure you get the right ones.

  cogs said:
Well how much power are you chasing?

If Jetdat is right then you can get 250rwkw with std injectors.

The most i can get in standard from, standard being ecu, bottem end, cams. Maybe around 200 - 250 rwkw. Ultimately in the long run around 300 350 rwkw using a 35/40 and maybe rb30 bottem end rebuilt with steel rods and forged pistons and a good set of cams.

Edited by LTHLRB

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