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1G Throttle body options

Posted by SasaniFab, Jul 3, 2020

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  1. SasaniFab

    SasaniFab Freelancer

    2,467
    763
    Joined Dec 1, 2013
    danbury, Connecticut
    I’ve made threads in the past regarding upgrading the throttle body on our cars. I’m currently running the stock 1g throttle body with mil spec seals. Id really like to upgrade the throttle body as I’m upgrading the intercooler and charge piping to 3 inch. From what I can see we have very few options. The s90 is a giant pile of shit. The q45 seems to work but guys have issues with the idle and tps sensor. I’ve heard of guys using the k tuned throttle body. Mustangs from what I can see don’t like boost. I’m at a loss boys
     

    Street Build 4K  20

    1992 Eagle Talon TSi
    645 whp · 498 lb/ft · 1G DSM
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  2. 1cleangsx

    1cleangsx Proven Member

    386
    202
    Joined Sep 28, 2013
    Cheyenne, Wyoming
    Morrison Fab made big power on the stocker, I thought you did a wright up on fixing the s90 boost leak issues?
     

    Street Build 2K  11

    1990 Mitsubishi Eclipse GSX
    13.2 @ 104.64 · 1G DSM
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  3. Car Cannibal

    Car Cannibal Proven Member

    425
    7
    Joined Jun 7, 2003
    Chicago, Illinois
    I got Steve Monroe years ago to port mine and then offer it to the community. He might still be porting them, 63-66mm I believe. I even did the half shaft for more flow.

    https://throttlebodys.com/1G Turbo TBs.htm
     
  4. SasaniFab

    SasaniFab Freelancer

    2,467
    763
    Joined Dec 1, 2013
    danbury, Connecticut
    I fixed the leak, the real issue is the aluminum shaft is very very brittle.....scares me.
     

    Street Build 4K  20

    1992 Eagle Talon TSi
    645 whp · 498 lb/ft · 1G DSM
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  5. NWHTanK

    NWHTanK Proven Member

    1,252
    157
    Joined Apr 23, 2011
    Odessa, Missouri
    I have been looking at this , but as far as price they not cheap. They do have a 77mm version. Screenshot_20200703-200329_Samsung Internet.jpg Screenshot_20200703-200409_Samsung Internet.jpg
     

    Attached Files:

    2K  7

    1998 Mitsubishi Eclipse GST
    fwd · manual · 2G DSM
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  6. SasaniFab

    SasaniFab Freelancer

    2,467
    763
    Joined Dec 1, 2013
    danbury, Connecticut
    He rebuilt mine, he does excellent work
     

    Street Build 4K  20

    1992 Eagle Talon TSi
    645 whp · 498 lb/ft · 1G DSM
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  7. DSMPT

    DSMPT Proven Member

    962
    512
    Joined Jun 12, 2014
    Japan / Mexico, Arizona
    I run the Q45. I really don't see the issues you mentioned. Maybe some cons are the stock shaft seals like Mustang's, you should reinforce them for high boost. and you wouldn't have the stock ISC unless you use an aftermarket adaptor. I have no issue with its TPS sensor.
     

    Drag Race Build 2K  3

    1990 Mitsubishi Eclipse GSX
    awd · manual · 1G DSM

    Street Build 2K  4

    1998 Mitsubishi Eclipse GSX
    awd · automatic · 2G DSM
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  8. NWHTanK

    NWHTanK Proven Member

    1,252
    157
    Joined Apr 23, 2011
    Odessa, Missouri
    Thier is also RMR. They are on the east coast and made in house.
     

    2K  7

    1998 Mitsubishi Eclipse GST
    fwd · manual · 2G DSM
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  9. Jerzm3

    Jerzm3 Supporting VIP

    254
    39
    Joined Jan 18, 2015
    mount holly, New Jersey
    I am running the RMR 82mm since my manifold is flanged for the Q45. I never had issues with my Q45, rock solid idle. A customer of mine, however, went through two tps sensors, which you cannot get anymore. No oem ones, no aftermarket ones. Even tho my tps has not given me any issue, I didn't want to wait till it did, so I switched. The RMR uses a $30 readily available Ford Mustang TPS. The RMR is VERY will built!!
     

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