fuel pressure regulator psi? super afc?

Posted by G-S-T, Jul 27, 2010
Dyno Talk - For all the DSM dyno queens. Discuss dyno results here. For tuning discussions, use the Tuning Forum.

Please Support Magnus Motorsports
  1. G-S-T

    G-S-T Probationary Member

    DSM Profiles:
    1
    Joined:
    Jun 28, 2010
    Posts:
    9
    Likes Received:
    0
    St. Paul, Minnesota
    anyone know what psi i need to set it at on my fuel pressure regulator? my car is a 97 eclipse gst. i also have a 1st generation super afc..i dont know what i should adjust all the knobs. help? thanks!
     
    #1
  2. whe3ls

    whe3ls Proven Member

    Joined:
    Jun 23, 2008
    Posts:
    560
    Likes Received:
    2
    spokane, Washington
    fuel pressure should be around 43psi
     
    #2
  3. G-S-T

    G-S-T Probationary Member

    DSM Profiles:
    1
    Joined:
    Jun 28, 2010
    Posts:
    9
    Likes Received:
    0
    St. Paul, Minnesota
    idk y but it jumps up and down sometimes between 33-43 but it mostly stays at 33 psi
     
    #3
  4. steve

    steve DSM Wiseman

    DSM Profiles:
    1
    Joined:
    Feb 3, 2002
    Posts:
    12,321
    Likes Received:
    297
    St. Charles, Illinois
    You set the base fuel with the vacuum line off and plugged to 43.5 psi. Once you reattach the vacuum line the fuel pressure will drop about 7-8 psi, assuming you have normal engine vacuum at idle. The fuel pressure with the line attached should change 1:1 with intake manifold pressure. Dropping when there is vacuum in the manifold and rising as there is boost.
     
    #4

Share This Page

Support Vendors who Support the DSM Community
Ace Race Parts Advanced Fuel Injection Automods Boostin Performance ECM Tuning Extreme Turbo Systems ExtremePSI Feal Suspension Forced Performance Turbos Fuel Injector Clinic Jacks Transmissions Jackson Auto Machine JNZ Tuning Kiggly Racing Magnus Motorsports Miller Import Parts OHM Racing Race Components Inc RockAuto RoadSurge SIRHC Labs Spultronix Performance STM Tuned Strictly Import Motorsports VR Speed Factory