s15 injectors

[xero1]

what the max safe rwhp out of a set of 480cc s15 injectors? i searched and couldn't find any help.

[Quickstart89]

I'm planning to get them.....I'd say under 300hp, I'm shooting for 280hp with an s14 turbo.

[da40]

I'm planning to get them.....I'd say under 300hp, I'm shooting for 280hp with an s14 turbo.

sounds about right but i think ur gonna be running them at a pretty high rate so they wont last as long as the should

[Quickstart89]

well I hope too, 270hp or something would still be cool.

[xero1]

270 hp at the wheels or crank?

[Quickstart89]

wheels, u think i can do it safely?

[NOAH041283]

are s15 injector direct replacment for s14 injectors or does it require ecu mod

[da40]

are s15 injector direct replacment for s14 injectors or does it require ecu mod

u should be able to do it without a rechiped ecu but might need a safc so u dont run rich as hell.I have 550cc and safc w/ethalpy ecu

[AmoebAssassin]

You will ABSOLUTELY need a tune or an SAFC. S13/S14 injectors are 370cc/min, and S15 injectors are 480cc/min.

I'd say S15s are good to 290ish whp, but thats pushing the duty cycles.

For cheaper than S15 injectors, you can buy USDM STi injectors (yellow tops) -- these are rated at 565cc/min, are drop in fitment for SR20DE/DET and KA24DE motors (you will need STi injector electrical connectors), and go for about 125-175 on ebay all the time.