injectors and fuel rail

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Apr 21, 2003 | 04:46 PM

spclagenth

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injectors and fuel rail

I was wondering how much power i could expect from adding some larger injectors and fuel rail to a 98rs. is there anything that would be a requirement such as a fuel mgmt system or a new pump. and also how big can i go before i need to start doing other mods?

Apr 21, 2003 | 04:53 PM

I3eXa

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Joined: Dec 2002

Posts: 2,002

From: CDA, ID

Car Info: 96 Impreza L Sedan

I was wondering about this on my 96 impreza so if you find out please forward it to me or PM me.
Thanks,
Cody

Apr 21, 2003 | 05:26 PM

mysubaruimp

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Joined: Dec 2002

Posts: 1,162

From: dover, NH

Car Info: 2001 sub. imp.

pretty sure it would run too rich unless you tuned the computer. if it did run rich with larger injectors would an s-afc help?

Apr 22, 2003 | 09:53 PM

Kevin M

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Posts: 18,369

From: Reno, NV

Car Info: 1993/2000/2001 GF4 mostly red

Changing injectors and adding a fuel pump is what you do when other mods are creating more air flow than your fuel system can handle. Since the stock EJ25 injectors and fuel pressure system candle around 240-250 hp, unless you are getting a turbo you're wasting your money.

Last edited by Kevin M; Apr 22, 2003 at 09:57 PM.