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Thread: TB Bypass

  1. #1
    Join Date
    Jul 2005
    Location
    Loganville, GA
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    168
    Ive been wanting to do the throttle body bypass for awhile now and was wondering what sizes the fittings were, if yall could also help out in where you got the fitting from and how you went about doing it id appriciate it too. thanks
    1999 GMC Sierra Z71 Ext Cab, True Dual Flowmasters with X-Pipe, True Flow Intake, MSD 8.5 Superconductor wires, 180 Thermo, TB Bypass, Optima Battery, Synthetic All the way around
    http://i139.photobucket.com/albums/q...7787/Truck.jpg

  2. #2
    Join Date
    Jan 2005
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    Humble/Houston TX
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    i want to say 3/16 brass barb but im not %100 on that. someone will correct me if wrong. let the truck cool completely. pull the hoses from each side of the throttle body and place the barb in between. 2 small hose clamps on each side and presto! make sure its not guna get in the way of your throttle linkage if your using a cable throttle body. if you live where it gets below freezing this mod isnt suggested.

    old mod list: H/C/I/N/E/G 408
    new mod list: 5.3, gears/posi, mufler and tune : (

  3. #3
    Join Date
    Jul 2005
    Location
    Loganville, GA
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    Thanks, i live in GA so i shouldnt have to worry about it because it doesnt too often get below freezing and gets decently hot in the summer.
    1999 GMC Sierra Z71 Ext Cab, True Dual Flowmasters with X-Pipe, True Flow Intake, MSD 8.5 Superconductor wires, 180 Thermo, TB Bypass, Optima Battery, Synthetic All the way around
    http://i139.photobucket.com/albums/q...7787/Truck.jpg

  4. #4
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    Jul 2005
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    Loganville, GA
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    i did it tonight, but found that the 5/16 worked good, 3 dollars for everything and i can swear i felt a small diffrence in some areas but maybe its just mental who knows, but thanks for the help
    zach
    1999 GMC Sierra Z71 Ext Cab, True Dual Flowmasters with X-Pipe, True Flow Intake, MSD 8.5 Superconductor wires, 180 Thermo, TB Bypass, Optima Battery, Synthetic All the way around
    http://i139.photobucket.com/albums/q...7787/Truck.jpg

  5. #5
    Join Date
    Jan 2005
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    Humble/Houston TX
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    <div class='quotetop'>QUOTE(Z71sierra7787 &#064; Feb 1 2006, 07&#58;16 PM) [snapback]43098[/snapback]</div>
    i did it tonight, but found that the 5/16 worked good, 3 dollars for everything and i can swear i felt a small diffrence in some areas but maybe its just mental who knows, but thanks for the help
    zach
    [/b]
    probably just mental IMO...but every lil thing helps i guess. thats why i have it done(and its almost my cheapest mod )

    old mod list: H/C/I/N/E/G 408
    new mod list: 5.3, gears/posi, mufler and tune : (

  6. #6
    Join Date
    Jan 2005
    Location
    Conway, AR
    Posts
    1,353
    most likely just mental gain, but it never hurts to know that you dont have that hot coolant running through the throttle body. I just ran the hose to the other side on mine, its a tight fit, but will hold until I buy a longer hose.

    Chris
    2009 Silverado, HPTuners, all stock.

  7. #7
    Join Date
    Jul 2005
    Location
    Loganville, GA
    Posts
    168
    I just used the 5/16 to 5/16 brass fitting and used two hose clamps and it sits nicely under the throttle body and looks looks clean and not rigged so im happy with it, but your right it probaly is mental for the most part, but knowing theres no hot coolant running through it is a plus like you said
    1999 GMC Sierra Z71 Ext Cab, True Dual Flowmasters with X-Pipe, True Flow Intake, MSD 8.5 Superconductor wires, 180 Thermo, TB Bypass, Optima Battery, Synthetic All the way around
    http://i139.photobucket.com/albums/q...7787/Truck.jpg

  8. #8
    Join Date
    Jan 2005
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    Conway, AR
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    yeah i hope to clean up how mine looks lol, I just was lazy and didnt feel like going back to Advance Auto to find the parts. I had just got done changing my valve cover gaskets, and i just wanted to sleep

    Chris
    2009 Silverado, HPTuners, all stock.

  9. #9
    Join Date
    Jul 2005
    Location
    Loganville, GA
    Posts
    168
    <div class='quotetop'>QUOTE(chrisj6 &#064; Feb 1 2006, 09&#58;58 PM) [snapback]43133[/snapback]</div>
    yeah i hope to clean up how mine looks lol, I just was lazy and didnt feel like going back to Advance Auto to find the parts. I had just got done changing my valve cover gaskets, and i just wanted to sleep

    Chris
    [/b]
    I know how that is, i found all the parts at Lowes in the plumbing section in a second even after looking around local automotive stores for the parts
    1999 GMC Sierra Z71 Ext Cab, True Dual Flowmasters with X-Pipe, True Flow Intake, MSD 8.5 Superconductor wires, 180 Thermo, TB Bypass, Optima Battery, Synthetic All the way around
    http://i139.photobucket.com/albums/q...7787/Truck.jpg

  10. #10
    Join Date
    Jan 2005
    Location
    Conway, AR
    Posts
    1,353
    Thats where I&#39;ll go then, thanks man, saves me a trip&#33;
    2009 Silverado, HPTuners, all stock.

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