i-Club - The Ultimate Subaru Resource - injectors and fuel rail

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spclagenth

04-21-2003 04:46 PM

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?

I3eXa

04-21-2003 04:53 PM

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

mysubaruimp

04-21-2003 05:26 PM

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?

Kevin M

04-22-2003 09:53 PM

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.

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