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Old 04-15-2002, 12:59 PM   #1
Scooby Specialist
Member#: 745
Join Date: Jan 2000
Location: Royal Oak, MI
2004 STi
Java Black Pearl

Default any fuel system upgrades necessary for stage 2 N/A mods?

I am gonna get cams and some other N/A goodies! Do I need to do anything to my fuel system? www.northursalia.com have a really interesting fuel rail mod. Is this necessary? Will I need a new fuel pump or FPR? Thanks!

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Old 04-15-2002, 11:37 PM   #2
Scooby Specialist
Member#: 2394
Join Date: Sep 2000
Chapter/Region: MAIC
Location: Bel Air Md.
2005 Legacy GT wagon
2009 Forester X


Excellent question,,,answers??
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Old 04-16-2002, 05:36 AM   #3
Scooby Specialist
Member#: 15135
Join Date: Feb 2002
Chapter/Region: NWIC
Location: Bend, Or. USA


A bigger fuel pump and adjustable fuel pressure regulator will help, but there is no need for bigger injectors until you max out (static) the stockers. If you have a high end 02 sensor and a S-AFC you can determine the ideal set up for the best a/f ratio.

Good luck with the build.

N/A all the way!!!
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