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Top 2GNT Technical Turbo/Nitrous Tech topic #104749
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Subject: "SFMU tuning help" Previous topic | Next topic
marcamos23Nov-26-08 09:51 AM
Member since Oct 27th 2007
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#104749, "SFMU tuning help"


          

hello i have a big trouble i have a 95 Rs eclipse stock head but i have a eagle H bean rod weisco 8:8 piston oversieze .30mm i have 370cc injector and i running a SFMU but for now mi trouble is i run way too rich at idle mi fuel pressur is 23psi and on mi wide band i run 10.9 on idle can someone tell me what to do to run lean and mi car puff grey a lot on idle and when i run help me please

  
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rstareNov-26-08 04:45 PM
Member since Jun 26th 2008
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#104750, "RE: SFMU tuning help"
In response to Reply # 0
 Nov-26-08 04:45 PM by rstare

          

Lower your fuel pressure...
Back the static screw out a little.

- Ryan

  
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marcamos23Nov-26-08 07:41 PM
Member since Oct 27th 2007
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#104751, "RE: SFMU tuning help"
In response to Reply # 1

          

mi bolt for the static is up i think i have a vac troubl emoji because i can drop mi pression less than 23psi

  
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SilvrEclipsNov-26-08 10:15 PM
Member since Nov 27th 2007
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#104752, "RE: SFMU tuning help"
In response to Reply # 2

          

I use to run the SFMU on 310cc injectors with the idle pressure around 25psi. When I changed to 440s I lowered the idle to around 20psi and the car ran fine. The ECU is going to pull some fuel until it maxes out.

How does the car run? Is the wideband calibrated correctly?

98 Eclipse GS Turbo
Built motor - MS2 - Holset hy35 - Zoom Stg 4 Clutch - 57.5mm TB - ARP Headstuds - Turbonetics wastegate - 3" Turbo back - FMIC - Greddy RZ BOV - Walbro 255 - 650cc Injectors - Fidanza Flywheel - Cobra calipers w/ 13" Rotors - Oil Cooler - DevilsOwn meth injection

1981 Chevy Scottsdale
1987 Nissan 300zx - Chump Car
2001 BMW 325i

  
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rstareNov-27-08 08:35 PM
Member since Jun 26th 2008
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#104753, "RE: SFMU tuning help"
In response to Reply # 2

          

Originally posted by marcamos23
mi bolt for the static is up i think i have a vac troubl emoji because i can drop mi pression less than 23psi



What size line are you using for the return? If it is too small it won't allow you to drop the pressure below a certian point. However I would think that 23psi would be low enough for 370cc injectors.

- Ryan

  
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