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How much boost is safe?

Posted by SuspectLaser, Jul 5, 2002

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  1. SuspectLaser

    SuspectLaser Proven Member

    14
    0
    Joined Apr 13, 2002
    Channelview,
    Ive got 90 Laser FWD with a 3" Turboback exhaust......upper ic piping.....full engine rebuild (pistons,rods etc....)..and an 18G......how much boost do you guys think would be safe on my stock fuel pump/injectors without leaning out and blowing up?......thanks for the help.....Eric
     
  2. 91gsx

    91gsx Proven Member

    233
    0
    Joined Mar 18, 2002
    ,
    stock fuel pump? i wouldn't go over 16lbs without an upgraded one. hell, i might not even go that high. the injectors aren't the main thing you have to worry about, the fuel pump is. keep the boost low until you get one. stay around 14-15psi.
     

    360  0

    1991 Mitsubishi Eclipse GSX
    · 1G DSM
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  3. larryd

    larryd Proven Member

    4,284
    0
    Joined Nov 26, 2001
    Bear, Delaware
    this may be a stupid question but is there a reason you have an 18g turbo with fully built engine and stock fuel?
     

    2K  0

    1998 Mitsubishi Eclipse GST
    13.421 @ 109.960 · 2G DSM
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  4. candela

    candela Proven Member

    3,367
    2
    Joined May 10, 2002
    Austin, Arizona
    i think he just meant a rebuild, not performance wise, just a regular rebuild...
     

    420  0


    · 2G DSM
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  5. 2boosted

    2boosted Proven Member

    59
    0
    Joined Sep 22, 2002
    ,
    i am installing a boost contoler tomorow on my tsi talon. my car is an automatic and i was wondering if it is the same as a standar at 15. Any input would be much appreciated!

    Thankyou in advance!
     

    230  0

    1996 Eagle Talon TSi AWD
    · 2G DSM
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  6. larryd

    larryd Proven Member

    4,284
    0
    Joined Nov 26, 2001
    Bear, Delaware
    if your still on the factory turbo and fuel then yes 15psi is a good # to keep it around.
     

    2K  0

    1998 Mitsubishi Eclipse GST
    13.421 @ 109.960 · 2G DSM
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  7. candela

    candela Proven Member

    3,367
    2
    Joined May 10, 2002
    Austin, Arizona
    15psi... perfect

    That is a kille pci Larry;)
     

    420  0


    · 2G DSM
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  8. 2boosted

    2boosted Proven Member

    59
    0
    Joined Sep 22, 2002
    ,
    yeah it is the stock turbo and fuel, just wanted some confermation guys, thanx for the help!
     

    230  0

    1996 Eagle Talon TSi AWD
    · 2G DSM
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  9. Mitseclipse101

    Mitseclipse101 Proven Member

    116
    0
    Joined Nov 30, 2002
    , Connecticut
    i ordered a turbo kit, its all hrc except its a frankinstein 3 turbo and a frontmount intercooler, it has all the other parts that the hrc kit comes with, i was wondering that a safe amount of boost would be to run when i install this, i have all stock internals, i have eagle rods and pstons but i have not got them installed yet, so it will be running on stock internals for now
     
  10. stickman

    stickman Proven Member

    245
    0
    Joined Apr 10, 2002
    Poulsbo, Washington
    Stay between 8-10 psi until you get the new internals.
     

    312  0

    1997 Mitsubishi Eclipse GSX
    · 2G DSM
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  11. 98Turbbo420A

    98Turbbo420A DSMtuners N/T Wiseman

    367
    0
    Joined Dec 6, 2002
    I think Frank turbos use a garrett T4 wheel, I can't remember, if so I have a full T04E and I'm running 10lbs on stock internals.....it's safe, but if you lean out you'll be pissed. I'd seriosuly think about some injectors and a good ingition box!
     

    393  0

    1998 Mitsubishi Eclipse N/T
    12.730 @ 117.420 · 2G DSM
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  12. Insert Name

    Insert Name Proven Member

    73
    0
    Joined Dec 14, 2002
    Middle of nowhere,
    Well, if my car ever gets out of the shop...

    Once I get the new engine/clutch broken in, I was wondering what a good setting would be for high boost (track use). The engine is a JDM 4g63, and the turbo is a 7cm 16G (not origional cyclone one). Anyhow, I know I can run it at 15psi safely, but would 18 be too much?

    Thanks :)
     

    256  0

    1990 Eagle Talon TSi AWD
    · 1G DSM
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  13. InferiorWang

    InferiorWang Proven Member

    1,065
    1
    Joined May 18, 2002
    Nashville/Knoxville, Tennessee
    what kind of fuel mods do you have? And what size injectors did the jdm 4g63 come with?
     
  14. Insert Name

    Insert Name Proven Member

    73
    0
    Joined Dec 14, 2002
    Middle of nowhere,
    Not sure on injectors. Once the car is broken in I am switching to a 255lph fuel pump and a buscher FPR.
     

    256  0

    1990 Eagle Talon TSi AWD
    · 1G DSM
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  15. metasonic

    metasonic Proven Member

    78
    0
    Joined Feb 15, 2003
    ,
    How much boost is safe to run daily on a stock 95 GSX?
     
  16. Dieselboy

    Dieselboy Proven Member

    2,131
    1
    Joined Nov 6, 2002
    Seattle Area, Washington
    On a T-25 Id say no more than 15 on a stock fuel set up.
     

    484  0

    1992 Eagle Talon TSi AWD
    manual · 1G DSM
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  17. DSMAddict

    DSMAddict Proven Member

    132
    0
    Joined Oct 15, 2002
    ,
    wouldnt go past 14 with that plastic piece of crap they call a BOV on 2gs
     
  18. m_eclipse_96

    m_eclipse_96 Proven Member

    206
    0
    Joined Nov 29, 2002
    ottawa, Illinois
    im going with DSMaddict on this one its safe right at 14 psi for everyday driving and if u still have that plastic blow off valve i hope u dont ever go over 15......... but if u do go over 15 psi u will have a good reason to upgrade to a better BOV LOL
    l8erz
     

    274  0

    1996 Mitsubishi Eclipse GST
    14.983 @ 93.610 · 2G DSM
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  19. TurBoGs-T

    TurBoGs-T Proven Member

    1,536
    0
    Joined Sep 1, 2002
    Glen Burnie / Balt,
    i second:thumb:
     

    348  0

    1997 Mitsubishi Eclipse GSX
    · 2G DSM
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  20. my95tsi

    my95tsi Proven Member

    872
    0
    Joined Dec 6, 2002
    Chicago, Illinois
    Ok what is a safe boost level on a stock t25 with 1g bov, brode uicp, intake, and cut dump tube, and joe p mbc. I was thinking 15psi but some say thats too unsafe.....
     

    342  0

    1995 Eagle Talon TSi
    manual · 2G DSM
    Loading...
  21. LTUSPE

    LTUSPE Proven Member

    212
    2
    Joined Jan 12, 2003
    Raleigh/Durham, North Carolina
    I'd say 15, maybe 16.....but not any more. There's only one way to find out! :p
     

    320  0

    1999 Mitsubishi Eclipse GSX
    12.470 @ 112.210 · 2G DSM
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  22. NOSNUSE

    NOSNUSE Proven Member

    711
    3
    Joined Jan 12, 2003
    belpre, Ohio
    I second that one:thumb:
     
  23. SDSGSX

    SDSGSX Proven Member

    83
    0
    Joined Nov 16, 2002
    Raleigh/Fayetteville, North Carolina
    ive run 15 and my roomate is runnin about 15.5 not quite 16 and weve had no problems...........

    BTW i have a 97 GSX and he has a 99 GST
     
  24. Phoenyx

    Phoenyx Proven Member

    216
    0
    Joined Nov 18, 2002
    Orange County, California
    Depends on the type of gas you are running..

    -M
     
  25. Famousgunner

    Famousgunner Proven Member

    39
    0
    Joined Sep 13, 2002
    ,
    I'm buying parts for my turbo convertion, and I was wondering if I could run the stock N/T pistons while I safe money to buy better ones. How much boost could I run, or better yet, how much boost will the stock N/T pistons handle?
     

    168  0

    1990 Plymouth Laser N/T
    · 1G DSM
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