fuel system set up

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dhellmer
Posts: 36
Joined: Mon Dec 10, 2007 4:44 pm
Car: 1991 S13 HB w/SR20DET swap

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I need to upgrade my fuel set up.. what should i go with and where are the best places to look for parts.Aeromotive a1000 regulator?walbro pump?550 injectors or bigger?

input appreciatedthanks


codyace
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Joined: Tue Apr 26, 2005 7:22 am
Car: S14 w/redtop
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dhellmer wrote:I need to upgrade my fuel set up.. what should i go with and where are the best places to look for parts.Aeromotive a1000 regulator?walbro pump?550 injectors or bigger?

input appreciatedthanks
What are your HP goals?

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wzntha
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Joined: Wed Aug 30, 2006 11:37 pm

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Last edited by wzntha on Thu Sep 20, 2012 4:33 am, edited 1 time in total.

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Hijacker
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Car: '92 240sx Convertible
'94 F-150
Location: Fredericksburg, VA

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If you're tuned properly, you shouldn't be running too rich. On high power goals, you want to be rich to give your motor overboost headroom to avoid detonation. I know some shops tune for 11.5:1 AFR or right around there. You sacrifice peak power to gain reliability and a safe zone.

To the OP, before you start slapping parts on your car, you need to have a goal. If ou're looking for 350 horsepower, 550s will do you, but if you want 400, you'll need to step up to 660s as the 550s will be over their max duty cycle.

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IanS
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Car: 2002 Subaru WRX, 2010 Subaru Forester XT, 2004 Infiniti G35 Coupe.
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wzntha wrote:when you change your injectors to 550 injectors, will you be running rich on a stock setup?
Yes, any time you change injector flowrates, you need to retune the computer to compensate, you cant just slap new ones in and expect it to run right.


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