is anyone using STi injectors on their sr ?

[PDX_S14]

im think about upgrading my injectors.... i saw subaru sti injectors are side feed.....woundering will they work with SR ? they are cheaper then the s15 injectors and the sti injector are 520 cc ..... what you guys think ?

[AmoebAssassin]

I bought a set and am waiting on a Z32 MAF and ROM burner/daughterboard.

I know a couple others have used them. There is some controversy as to what their true flow rates are, but I've heard 550cc/min, 525cc/min, and 500cc/min.

I paid 105 shipped for mine, so I'm not arguing. They'll get me to well over 300whp.

You will need to either buy STi injector plugs and wire them into your SR harness, or get a dremel tool and modify the STi injectors so that you can use them with SR20 injector plugs.

They physically drop in, but as I said above, you will either have to wire in new plugs or modify the injectors to work with SR plugs.

[got2b240]

I currently have these installed. I had to dremel out the inside near the prongs to get them to slide into the clips of the stock SR harness.

They seem like they might be 500-520cc injectors. I spoke to Deatschwerks and they said anywhere from 525 to 565???

If anyone could post up some AFC info on them, maybe some base tuning info so I can get my car to run less crappy. I am just waiting to go to the dyno and make 300

[Dragon13]

I hear these also work with the Ka engine do any of you know that for sure? And AmoebAssassin where did you get them for 105 shipped? And do they have any more?

[AmoebAssassin]

I got mine off of a member at NASIOC.com

[codyace]

im think about upgrading my injectors.... i saw subaru sti injectors are side feed.....woundering will they work with SR ? they are cheaper then the s15 injectors and the sti injector are 520 cc ..... what you guys think ?

A pal of mine sent a set to Jim Wolf for testing, and they ended up flowing 515cc IIRC...he will be firing the car up within the next week.

FWIW: The Suby injectors offer a newer and more effecienty pintle design (according to JWT) over the Nismo as well.

[efrain240sx]

I was told by one of the mechanics from monstore fab that you can bore the STI injectors up to 900cc, he also told me that his friend bored his to 700cc and they work great

[luv2spedup]

does anyone have their setting for use with these on an SAFC with Z32 mafs on an SR ECU?

[codyace]

does anyone have their setting for use with these on an SAFC with Z32 mafs on an SR ECU?

Yea, go get a JWT or Enthalpy ECU and do it right.

[2l84u]

Prob a stupid question, but what year was everyone using? Is it 05 and up. It seems like all you have to do is modify the plastic near the inner pin to still use stock SR plugs.

[DarkBlueSr240]

Not to get off subject but will supra injectors work? they are 550's

[burgy240]

I'm pretty sure the Supra injectors don't work without modification but anymore than that andI couldn't be sure.

I second the question about what year STI injectors are needed? anybody know?

[Dragon13]

I thought it was 05 and newer

[virus77]

ive ran them on my kat and sr20 so they do work, just need to modify the plugs a little. Make sure its a USDM STi only, the jdm ones are top feed and base wrx is top feed as well.

[Emperor_Tha]

where can you find sti injectors or even s15 injectors. can never find the s15 on ebay.