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Old 04-26-2003, 06:17 PM   #1
Scooby Newbie
Member#: 23472
Join Date: Aug 2002
Location: Kingston, Ont, Canada
2004 STi

Default WRX fuel pump & injectors

I have a 99 RS that I have Brullen headers & exhaust on with an intake. Would there be any advantage to using WRX fuel pump and injectors or is that only for car's with turbo's?
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Old 04-26-2003, 06:44 PM   #2
iON Performance Inc
Member#: 7673
Join Date: Jun 2001
Location: Calgary, Alberta, Canada

Crimson - there would be no advantage in upping the injectors as well as fuel pump yet.

If you do all the N/A head-work & a N/A bottom end build, then it would be beneficial to step up to the 420cc injectors & the pump from the WRX.
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Old 04-27-2003, 03:24 PM   #3
Scooby Newbie
Member#: 27132
Join Date: Oct 2002
Location: Colorado Springs, Colorado
1999 2.5 RS-T
Rally Blue


I ran 420cc injectors and Walbro 255lph pump on my RS with a S-AFC, underdrive pulley, borla exhaust, and a intake. There was absolutely no gains. In fact, I think it got slower. I only put them to prepare for the turbo. Now with a turbo theyre great, but too much for NA.
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