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Fast TB only opens 80%

This is a discussion on Fast TB only opens 80% within the General Help forums, part of the LSx Technical Help Section category; Since fitting the new Fast 92 Manifold along with the Big Bouth 92mm TB the thottle blade is only opening ...

  1. #1
    Junior Member
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    White
    02 Commodore SS

    Fast TB only opens 80%

    Since fitting the new Fast 92 Manifold along with the Big Bouth 92mm TB the thottle blade is only opening 80%. The car is a Holden Commodore LS1 same as the Pontiac GTO in the states, anyone know how to fix this problem?

  2. #2
    Member Dewman's Avatar
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    Navy Blue Metallic
    2000 Camaro z28

    the screw set down too far?

    nm sorry i was thinking of it wrong i am drunk.

    there is a metal stopper , is there somthing in the way of it?
    Last edited by Dewman; 10-08-2008 at 09:46 PM.

  3. #3
    Junior Member
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    White
    02 Commodore SS

    Theres nothing really stopping it, i fitted a spring which opened the TB 100% but made the throttle far too loose.

  4. #4
    MOTOR CITY MARO' SSTODD's Avatar
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    PEWTER
    2000 CAMARO SS #3821

    Is it a cable operated? I had my SS only going to 85% on a data logger and found the cable coupler back towards the firewall loose and it was making the cable flex and not open 100%. It was a pinch-style and I just moved the cable back where it belonged and pinched it shut.

  5. #5
    Slow'er'Ass Mr. Luos's Avatar
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    Red Tint Jewelcoat
    2008 Trailblazer SS

    I recall only seeing 60% when I first installed mine.

    One of the band clamps was in the way of the piece circled above. Took a little time to notice it.

  6. #6
    Veteran 0rion's Avatar
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    98 Formula
    06 duramax

    I agree with these guys...the first thing to do is verify nothing is physically keeping it from going 100%. Is it a drive by wire car or cable operated TB? The reason I ask is because my brothers drive by wire car will show 88% in the scanner if you log throttle position, you have to log ect position.

  7. #7
    Member Dewman's Avatar
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    Navy Blue Metallic
    2000 Camaro z28

    did the floor mat slide under your loud pedal?

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