Thread: Lazy Boost

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  1. #1 Lazy Boost 
    GrandPrix Junkie SDGTP99's Avatar
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    Really it is. I barely touch the gas and the boost gauge lights up. I can here the supercharger but I sure as **** cant feel any boost. I have to mash the gas to feel any boost at all. Im assuming vacuum leak, BBV isn't closing, bad tune or something else. I just don't know. Blah...
    OverKilled, HAI, Ported Throttle body, Ported intake, ZZP DP, Magnaflow, BMR ta's, GMPP STB's, CCS springs, tinted tailights, roof rails, TEP cool'r, G8 hood. Glass Gearbox.
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  2. #2 Re: Lazy Boost 
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    bad map? you shouldnt see boost that quickly
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  3. #3 Re: Lazy Boost 
    Perma-Banned! JK LOL Explicit_Spade's Avatar
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    Stock tune?
    Quote Originally Posted by W-Body Store
    Remember, GM engineers didn't take into account your need for speed.
    Daily Driver: 06 Grand Prix GT / 9.4:1 CR / IS3 Heads / Ported Gen V / ZZP Headers / HPT Pro / Pulleys: 4.25, 3.8, 3.5, 3.4, 3.2, 3.0, 2.9, 2.7
    Projects: 86 Monte Carlo SS / 98 Sonoma / 74 Honda CB750
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  4. #4 Re: Lazy Boost 
    GrandPrix Junkie SDGTP99's Avatar
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    Nvm. When I popped my hood to hook my boost gauge back up I Found s/c oil all over the s/c. That was vacuum leak pt1. I also discovered thr was a third line on the boost bypass solenoid that had nothing connected to it so I capped it of. That was vacuum leak pt2. Is anything bes iyd es the bbv and fuel line vacuume supposed to be connected to that?
    OverKilled, HAI, Ported Throttle body, Ported intake, ZZP DP, Magnaflow, BMR ta's, GMPP STB's, CCS springs, tinted tailights, roof rails, TEP cool'r, G8 hood. Glass Gearbox.
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  5. #5 Re: Lazy Boost 
    GTP Level Member KeithGTP03's Avatar
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    Mine goes from here





    To here



    ^this is at the heater core inside the car, passenger side, behind the center console

    03 GTP...Its got pulleys and stuff.
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  6. #6 Re: Lazy Boost 
    GrandPrix Junkie SDGTP99's Avatar
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    Im not going to edit that to fix my typo. I'll leave it there for you all to figure out.
    OverKilled, HAI, Ported Throttle body, Ported intake, ZZP DP, Magnaflow, BMR ta's, GMPP STB's, CCS springs, tinted tailights, roof rails, TEP cool'r, G8 hood. Glass Gearbox.
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  7. #7 Re: Lazy Boost 
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    The BBS is the small cylinder just below the BBV.
    OverKilled, HAI, Ported Throttle body, Ported intake, ZZP DP, Magnaflow, BMR ta's, GMPP STB's, CCS springs, tinted tailights, roof rails, TEP cool'r, G8 hood. Glass Gearbox.
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  8. #8 Re: Lazy Boost 
    GrandPrix Junkie SDGTP99's Avatar
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    Well. If that missing line was supposed to connect to the inside accessories like the aircon then that woud explain why my dual aircon dosent work right....cuz thrs no vacuum line goin to it. Hrm...
    OverKilled, HAI, Ported Throttle body, Ported intake, ZZP DP, Magnaflow, BMR ta's, GMPP STB's, CCS springs, tinted tailights, roof rails, TEP cool'r, G8 hood. Glass Gearbox.
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  9. #9 Re: Lazy Boost 
    GTP Level Member KeithGTP03's Avatar
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    Yeah....it wont blow for chit, and will have issues switching levels.

    03 GTP...Its got pulleys and stuff.
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  10. #10 Re: Lazy Boost 
    GrandPrix Junkie SDGTP99's Avatar
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    Yes I have that problem. Are there two lines then that go to the hvac? The line on top of my s/c is connected. Its the line on the bypass solenoid that isn't
    OverKilled, HAI, Ported Throttle body, Ported intake, ZZP DP, Magnaflow, BMR ta's, GMPP STB's, CCS springs, tinted tailights, roof rails, TEP cool'r, G8 hood. Glass Gearbox.
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  11. #11 Re: Lazy Boost 
    GTP Level Member KeithGTP03's Avatar
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    There is just the one going into the car. I believe the other one runs to the HVAC controls. I dont have muh car here to verify right now. I only have two lines goin to the bbs, one in from the bbv and out to the vac manifold. Pay no attention to the circle...for another post

    03 GTP...Its got pulleys and stuff.
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  12. #12 Re: Lazy Boost 
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    On that diagram. Number 7. Top right. That is an open port with nothing connected too it. I capped it off now the car runs great.
    OverKilled, HAI, Ported Throttle body, Ported intake, ZZP DP, Magnaflow, BMR ta's, GMPP STB's, CCS springs, tinted tailights, roof rails, TEP cool'r, G8 hood. Glass Gearbox.
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  13. #13 Re: Lazy Boost 
    GTP Level Member KeithGTP03's Avatar
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    Yeah, the diagram looks like its showing it capped. I'll have to look under my hood to see. I should get my car back tomorrow.

    03 GTP...Its got pulleys and stuff.
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  14. #14 Re: Lazy Boost 
    GrandPrix Junkie SDGTP99's Avatar
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    Alrighty if it is capped that tells me I did fix a big problem.
    OverKilled, HAI, Ported Throttle body, Ported intake, ZZP DP, Magnaflow, BMR ta's, GMPP STB's, CCS springs, tinted tailights, roof rails, TEP cool'r, G8 hood. Glass Gearbox.
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  15. #15 Re: Lazy Boost 
    The Blue One blueguy's Avatar
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    #7 should have a side open to the atmosphere...if it is capped then you might have an issue.
    Sold WBody's: '03 Blue GTP/'98 Green GTP/'98 Silver GT/'05 GXP
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  16. #16 Re: Lazy Boost 
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    Your probably right. But, when I capped that off it fixed my boost issue. I have no issues at all now.
    OverKilled, HAI, Ported Throttle body, Ported intake, ZZP DP, Magnaflow, BMR ta's, GMPP STB's, CCS springs, tinted tailights, roof rails, TEP cool'r, G8 hood. Glass Gearbox.
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  17. #17 Re: Lazy Boost 
    GTX Level Member tayl5645's Avatar
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    Yeah idk about open. I know what your saying and I was working under there yesterday and mine is capped too. Stock
    2005 GTP Grey

    Custom built Open cone intake, 15% tints all the way around, 7" touchscreen DVD player
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  18. #18 Re: Lazy Boost 
    The Blue One blueguy's Avatar
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    Probably because you have a vacuum leak elsewhere.
    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: Lazy Boost 
    Donating User Swiggles's Avatar
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    that should have a small piece of foam as a filter on it not capped. if your vents arent working then you still have a leak somewhere.
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