Thread: 2004 Grand Prix GTP bogging down after header installation.

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  1. #1 2004 Grand Prix GTP bogging down after header installation. 
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    I had a set of Pacesetter headers installed on my GP. After they were installed when you accelerate hard to activate the super charger the engine boggs down. The boost meter is going all the way but no acceleration. Everything else is stock on the car. Any help would be appreciated.

    PS. I have eliminated the cat.

    thanks alot
    kolman0
    Last edited by kolman0; 03-05-2013 at 12:58 PM. Reason: I have eliminated the cat.
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  2. #2 Re: 2004 Grand Prix GTP bogging down after header installation. 
    Turbo is the way to go. Fivefingerdeathpunch's Avatar
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    Plugged cat comes to mind, not sure if you are running one though.

    SMGPFC Member #1
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  3. #3 Re: 2004 Grand Prix GTP bogging down after header installation. 
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    Possibly a tune. Front o2 sensor not used to what it is seeing.
    Silver Ghost: 05 galaxy silver GTP stock for now
    the blue beast: 92 park ave. with a few things
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  4. #4 Re: 2004 Grand Prix GTP bogging down after header installation. 
    GTP Level Member L36 Killer's Avatar
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    I would think that running headers on a stock Cat. and exhaust could cause backflow at the Cat. But TBH, I never tried it myself.
    "SHELLY" GRAND PRIX GT 02. SLP HEADERS & EXHAUST, K&N CAI, BMR REAR SUSPENSION AND STRUT BRACES, 180 T-STAT, AGX STRUTS, EIBACH SPRINGS, OVERKILL PCM, YELLA TERRA 1.7 ROCKERS, GT1 CAM, SEXMAN PORTED & POLISHED HEADS, STAGE 2 PORTED TB
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  5. #5 Re: 2004 Grand Prix GTP bogging down after header installation. 
    Turbo is the way to go. REDCRAPGP's Avatar
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    Yup I would check the cat and verify your also not having any exhaust leaks.
    Squirrels are my engine. I need a Ford Regal
    04 Comp G.
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  6. #6 Re: 2004 Grand Prix GTP bogging down after header installation. 
    Turbo is the way to go. BillBoost37's Avatar
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    Did you leave the plugs in when installing the headers?
    I drink..so consider that when reading my posts.

    2010 Audi A6 Dual IC's
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  7. #7 Re: 2004 Grand Prix GTP bogging down after header installation. 
    I live here. Slick2500's Avatar
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    Probably something unrelated to the headers like a plugged fuel filter.
    2003 Redfire Metallic Chevy Tahoe Z71 - Airaid Modular Intake Tube, Flowmaster Exhaust.
    Quote Originally Posted by The Sunfire Guy
    Superchargers take away horsepower
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  8. #8 Re: 2004 Grand Prix GTP bogging down after header installation. 
    Turbo is the way to go. BillBoost37's Avatar
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    You didn't buy the my pulley locked up on a belt change. Why are you thinking the fuel filter magically plugged with header install?

    These issues are typically right in the area of the install.
    I drink..so consider that when reading my posts.

    2010 Audi A6 Dual IC's
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  9. #9 Re: 2004 Grand Prix GTP bogging down after header installation. 
    I live here. Slick2500's Avatar
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    No that guy says he has the wrong pulley on his car and he didn't notice or it didn't cause any issues before he changed the belt that is what I find odd.
    And I was just thinking outside the box. When my car had those same issues everyone was like check for vacuum leaks, is your bov valve working, what kind of plugs do you have, when all it needed was a fuel filter.
    2003 Redfire Metallic Chevy Tahoe Z71 - Airaid Modular Intake Tube, Flowmaster Exhaust.
    Quote Originally Posted by The Sunfire Guy
    Superchargers take away horsepower
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