Thread: help me install my boost gauge!

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  1. #1 help me install my boost gauge! 
    GT Level Member des19's Avatar
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    Hey guys, about half way through my boost gauge install.

    couple questions.

    1) is reading of 15-16 hg normal for vaccum?

    2)I tapped in with a T under the supercharger snout. However there is a vac cable that goes into the snout T and one cable that comes out of the snout T which leads to the bbv if Im not mistaken. I tapped in with a T "after the snout" so in between the bbv and the snout T. Is this fine to read boost and vac or should i change it to tap into before the snout T??

    3)should it read boost in park?? don't think it was didnt get a chane to drive it yet. my dic gauge has always read full bars.


    if anyone can help me out here i'M almost done!
    Last edited by des19; 08-15-2012 at 09:33 PM.
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  2. #2 Re: boost gauge intall? 
    The Blue One blueguy's Avatar
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    Yes you can read boost in park.

    You should actually "T" it in under the MAP sensor on the back of the supercharger vac lines, not under the snout.
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  3. #3 Re: boost gauge intall? 
    GTX Level Member blakgtp's Avatar
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    ^ is there a reason for that? or just to save line when you run it back into the car?
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  4. #4 Re: boost gauge intall? 
    GT Level Member des19's Avatar
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    Quote Originally Posted by blueguy91 View Post
    Yes you can read boost in park.

    You should actually "T" it in under the MAP sensor on the back of the supercharger vac lines, not under the snout.
    where is this? srry first time installing a gauge. also it is 04 gtp dont know if that matters
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  5. #5 Re: boost gauge intall? 
    The Blue One blueguy's Avatar
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    follow the vac lines to the backside of the supercharger.

    The MAP sensor is a black 3wire sensor bolted to a bracket.

    "T" into the vac line that runs to it.
    Sold WBody's: '03 Blue GTP/'98 Green GTP/'98 Silver GT/'05 GXP
    '99 Chevrolet Silverado Classic Z71 4x4 - K&N Intake/Gibson Exhaust #TRUCKTHINGS
    '12 Buick Regal Turbo - ZZP CAI/20% Tint/HID's
    '89 Ford Mustang LX Notchback - LM7 5.3, 4L80, 9", HX40
    '04 Chevrolet Corvette MRM A4/LS1 - TSP LT's, 3"O/R X, AFE S2 CAI
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  6. #6 Re: boost gauge intall? 
    The Blue One blueguy's Avatar
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    Quote Originally Posted by blakgtp View Post
    ^ is there a reason for that? or just to save line when you run it back into the car?
    Yes, because that is the proper location for a reading.

    Everything else is gonna get poopoo skewed.
    Sold WBody's: '03 Blue GTP/'98 Green GTP/'98 Silver GT/'05 GXP
    '99 Chevrolet Silverado Classic Z71 4x4 - K&N Intake/Gibson Exhaust #TRUCKTHINGS
    '12 Buick Regal Turbo - ZZP CAI/20% Tint/HID's
    '89 Ford Mustang LX Notchback - LM7 5.3, 4L80, 9", HX40
    '04 Chevrolet Corvette MRM A4/LS1 - TSP LT's, 3"O/R X, AFE S2 CAI
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  7. #7 Re: boost gauge intall? 
    GT Level Member des19's Avatar
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    also currenly where i have it "t"d it shows 15-16 vac is this normal? thought it should be around 20. thanks
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  8. #8 Re: boost gauge intall? 
    The Blue One blueguy's Avatar
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    It should be around 19-20

    Hence my post about being the proper location.
    Sold WBody's: '03 Blue GTP/'98 Green GTP/'98 Silver GT/'05 GXP
    '99 Chevrolet Silverado Classic Z71 4x4 - K&N Intake/Gibson Exhaust #TRUCKTHINGS
    '12 Buick Regal Turbo - ZZP CAI/20% Tint/HID's
    '89 Ford Mustang LX Notchback - LM7 5.3, 4L80, 9", HX40
    '04 Chevrolet Corvette MRM A4/LS1 - TSP LT's, 3"O/R X, AFE S2 CAI
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  9. #9 Re: boost gauge intall? 
    GT Level Member des19's Avatar
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    Quote Originally Posted by blueguy91 View Post
    It should be around 19-20

    Hence my post about being the proper location.
    okay will try this tomorrow.

    thanks boss.
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  10. #10 Re: boost gauge intall? 
    The Blue One blueguy's Avatar
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    yuuuuuuuuuuuuuuuuup
    Sold WBody's: '03 Blue GTP/'98 Green GTP/'98 Silver GT/'05 GXP
    '99 Chevrolet Silverado Classic Z71 4x4 - K&N Intake/Gibson Exhaust #TRUCKTHINGS
    '12 Buick Regal Turbo - ZZP CAI/20% Tint/HID's
    '89 Ford Mustang LX Notchback - LM7 5.3, 4L80, 9", HX40
    '04 Chevrolet Corvette MRM A4/LS1 - TSP LT's, 3"O/R X, AFE S2 CAI
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  11. #11 Re: boost gauge intall? 
    GrandPrix Junkie gtpeddie's Avatar
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    thanks as well! ill be putting mine in the right place when i get the time

    97 GTP DD, 1952 Ford F-1 Resto Project, 2006 Mustang GT "UnDeR CoNsTrUcTiOn", 02 GPGT SOLD!, 98 GTP Parted/Scraped
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  12. #12 Re: boost gauge intall? 
    The Blue One blueguy's Avatar
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    around 20~ with a stock valvetrain that is.

    And no vac leaks, lol.
    Sold WBody's: '03 Blue GTP/'98 Green GTP/'98 Silver GT/'05 GXP
    '99 Chevrolet Silverado Classic Z71 4x4 - K&N Intake/Gibson Exhaust #TRUCKTHINGS
    '12 Buick Regal Turbo - ZZP CAI/20% Tint/HID's
    '89 Ford Mustang LX Notchback - LM7 5.3, 4L80, 9", HX40
    '04 Chevrolet Corvette MRM A4/LS1 - TSP LT's, 3"O/R X, AFE S2 CAI
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  13. #13  
    I live here. MoarkatsINmuhtrailer's Avatar
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    Boss?



    Heh
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  14. #14 Re: boost gauge intall? 
    The Blue One blueguy's Avatar
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    Yeah.

    Let's go there, cats.
    Sold WBody's: '03 Blue GTP/'98 Green GTP/'98 Silver GT/'05 GXP
    '99 Chevrolet Silverado Classic Z71 4x4 - K&N Intake/Gibson Exhaust #TRUCKTHINGS
    '12 Buick Regal Turbo - ZZP CAI/20% Tint/HID's
    '89 Ford Mustang LX Notchback - LM7 5.3, 4L80, 9", HX40
    '04 Chevrolet Corvette MRM A4/LS1 - TSP LT's, 3"O/R X, AFE S2 CAI
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  15. #15  
    I live here. MoarkatsINmuhtrailer's Avatar
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    So where should I tap a vacuum line in for the boost gauge on my gt? I heard it pushes so much boost it actually doesn't read past 0
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  16. #16 Re: boost gauge intall? 
    The Blue One blueguy's Avatar
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    That's what we call a vacuum gauge, Hoover.
    Sold WBody's: '03 Blue GTP/'98 Green GTP/'98 Silver GT/'05 GXP
    '99 Chevrolet Silverado Classic Z71 4x4 - K&N Intake/Gibson Exhaust #TRUCKTHINGS
    '12 Buick Regal Turbo - ZZP CAI/20% Tint/HID's
    '89 Ford Mustang LX Notchback - LM7 5.3, 4L80, 9", HX40
    '04 Chevrolet Corvette MRM A4/LS1 - TSP LT's, 3"O/R X, AFE S2 CAI
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  17. #17 Re: boost gauge intall? 
    GT Level Member des19's Avatar
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    i also have a p0135 i can't get rid of. tried everything, heard a vac leak can trigger this code...if that the case bad timing on the gauge instsll to have a vac leak
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  18. #18 Re: boost gauge intall? 
    The Blue One blueguy's Avatar
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    I think that's an o2 code.

    Can't recall.

    Too lazy to look.
    Sold WBody's: '03 Blue GTP/'98 Green GTP/'98 Silver GT/'05 GXP
    '99 Chevrolet Silverado Classic Z71 4x4 - K&N Intake/Gibson Exhaust #TRUCKTHINGS
    '12 Buick Regal Turbo - ZZP CAI/20% Tint/HID's
    '89 Ford Mustang LX Notchback - LM7 5.3, 4L80, 9", HX40
    '04 Chevrolet Corvette MRM A4/LS1 - TSP LT's, 3"O/R X, AFE S2 CAI
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  19. #19 Re: boost gauge intall? 
    GT Level Member des19's Avatar
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    yes it is front 02 sensor heater bank 1...replaced sensor, ran diagnostics..everything looks good still getting a p0135 code.....BS
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  20. #20 Re: boost gauge intall? 
    Turbo is the way to go. BillBoost37's Avatar
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    Now diagnose it.. Look up the code and check the heater circuit fuse.

    As for the vacuum line. It doesn't matter where you T into the line. You need to be hooked in anywhere on the horseshoe of line from BCS to FPR to LIM to MAP. Doesn't matter a bit where in that line you tap in. Not sure why Blueguy was pushing you to put it in a nice clean location vs making a mess under the snout.
    I drink..so consider that when reading my posts.

    2010 Audi A6 Dual IC's
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