Thread: 2004 grand prix gt installing a boost gauge what do you have?

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  1. #1 2004 grand prix gt installing a boost gauge what do you have? 
    SE Level Member justin10morrissey's Avatar
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    i have an 2004 grand prix gt that is supercharged. first off is it rare that i have a supercharged from the factory gt? and i am wanting to put a boost gauge in the top driverside air vent to the left of my steering wheel keep in mind this is the new body style and i have seen people put the gauges in there vents in there speed3's so i wanna try it in my gp and if anyone has done it some pics and info would be great. thanks
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  2. #2 Re: 2004 grand prix gt installing a boost gauge what do you have? 
    Turbo is the way to go. Fivefingerdeathpunch's Avatar
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    so its a GTP?

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  3. #3 Re: 2004 grand prix gt installing a boost gauge what do you have? 
    GXP Level Member ctracer's Avatar
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    sounds like it was aftermarket because dont they come with a factory boost gauge?
    07 Black GXP.
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  4. #4 Re: 2004 grand prix gt installing a boost gauge what do you have? 
    I live here. stealthee's Avatar
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    The only GT's that were factory supercharged were the 06 and 07 GT's because Pontiac dropped the GTP nomenclature from the Grand Prix line up. If your car is a 04 GT and is supercharged, someone swapped it. If you scroll through your DIC there would be a factory "boost gauge" if your car is indeed factory supercharged.

    As it stands, its basically pointless to have a boost gauge in a supercharged application anyway.


    2011 Mitsubishi Lancer GTS - DD mode
    1991 Mitsubishi 3000GT - Many mods to come
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  5. #5 Re: 2004 grand prix gt installing a boost gauge what do you have? 
    I Give Zero Fvcks DreadMcLaren's Avatar
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    Quote Originally Posted by stealthee View Post
    If you scroll through your DIC there would be a factory "boost gauge" if your car is indeed factory supercharged.
    Incorrect. My 04 GTP doesn't have a boost gauge built into the DIC.
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  6. #6 Re: 2004 grand prix gt installing a boost gauge what do you have? 
    SE Level Member justin10morrissey's Avatar
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    Quote Originally Posted by stealthee View Post
    The only GT's that were factory supercharged were the 06 and 07 GT's because Pontiac dropped the GTP nomenclature from the Grand Prix line up. If your car is a 04 GT and is supercharged, someone swapped it. If you scroll through your DIC there would be a factory "boost gauge" if your car is indeed factory supercharged.

    As it stands, its basically pointless to have a boost gauge in a supercharged application anyway.
    Its a gt its supercharged its not a gtp. there arent heated seats or a heads up display or the 5 button dic no boost gauge and nothing has been swapped came like this from the factory so im assuming its kinda rare
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  7. #7 Re: 2004 grand prix gt installing a boost gauge what do you have? 
    I Give Zero Fvcks DreadMcLaren's Avatar
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    It never came from the factory like that. My GTP is exactly like yours. If it has always had a supercharger, its a GTP.
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  8. #8 Re: 2004 grand prix gt installing a boost gauge what do you have? 
    SE Level Member justin10morrissey's Avatar
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    but back to the topic has anyone put an aftermarket boost gauge in their air vent cause i dont want a a pillar pod? pictures would be nice
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  9. #9 Re: 2004 grand prix gt installing a boost gauge what do you have? 
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    Im callin shenanigans. but yes plenty have put the gauge in the air vent
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  10. #10 Re: 2004 grand prix gt installing a boost gauge what do you have? 
    GXP Level Member boostedcompg's Avatar
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    it didnt come from the factory like that. post up your vin number. either its a gtp or its been swapped. and if its been swapped id sure as hell wanna know if i was you
    04 comp G, front/rear towerbraces, pacesetters, ported sc, LIM, 3.3 pulley, 1.9 mod rockers, Ls1 springs and retainers, custom dyno tune, 180 tstat, shortned dog bones, full poly mounts, zzp shift kit, custom fwi, 28inch cherry bomb, flowmaster 40's. 290whp 380wtq before the button. coldfusion n2o, 60 shot. I haz corvette brakezand gxp cluster! smgpfc028
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  11. #11 Re: 2004 grand prix gt installing a boost gauge what do you have? 
    I live here. stealthee's Avatar
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    Quote Originally Posted by justin10morrissey View Post
    Its a gt its supercharged its not a gtp. there arent heated seats or a heads up display or the 5 button dic no boost gauge and nothing has been swapped came like this from the factory so im assuming its kinda rare
    It did not come supercharged from the factory if it is an 04 GT.

    And why do you insist on a boost gauge? Its POINTLESS on a supercharged car.


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  12. #12 Re: 2004 grand prix gt installing a boost gauge what do you have? 
    Because Wet Leaves Hippo Machine's Avatar
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    Get a boost controller boi


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  13. #13 Re: 2004 grand prix gt installing a boost gauge what do you have? 
    GXP Level Member boostedcompg's Avatar
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    i wouldnt say useless....just not super useful. only time mine ever helped was when my map sensor vac line blew off. instantly knew it.
    04 comp G, front/rear towerbraces, pacesetters, ported sc, LIM, 3.3 pulley, 1.9 mod rockers, Ls1 springs and retainers, custom dyno tune, 180 tstat, shortned dog bones, full poly mounts, zzp shift kit, custom fwi, 28inch cherry bomb, flowmaster 40's. 290whp 380wtq before the button. coldfusion n2o, 60 shot. I haz corvette brakezand gxp cluster! smgpfc028
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  14. #14 Re: 2004 grand prix gt installing a boost gauge what do you have? 
    Perma-Banned! JK LOL Explicit_Spade's Avatar
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    Quote Originally Posted by justin10morrissey View Post
    Its a gt its supercharged its not a gtp. there arent heated seats or a heads up display or the 5 button dic no boost gauge and nothing has been swapped came like this from the factory so im assuming its kinda rare
    So you purchased this car new from a certified GM dealer in Late 2003 or 2004?
    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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  15. #15 Re: 2004 grand prix gt installing a boost gauge what do you have? 
    I live here. stealthee's Avatar
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    This is just like the conversation with the kid with the 07 base who swears its a GT even though it has base wheels, base exhaust, base interior, and a non supercharged 3.8.


    2011 Mitsubishi Lancer GTS - DD mode
    1991 Mitsubishi 3000GT - Many mods to come
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  16. #16 Re: 2004 grand prix gt installing a boost gauge what do you have? 
    I live here. brandonl2000's Avatar
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    someone stole the P off your badge bruh
    2003 Grand Prix GTP-3.5 setup, sold it, miss it
    2002 Grand Prix GT-top swap, GT1 Cam, SD Headers, 90# springs, 42.5 injectors, 3.4 pulley - sold
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  17. #17 Re: 2004 grand prix gt installing a boost gauge what do you have? 
    GTP Level Member joshv's Avatar
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    i have a boost gauge in my drivers side air vent.. will post pics soon or you can see it in this video

    at 1 min 5 seconds i show the guage then it is shown later on again

    2005 grand prix GXP turbo - YouTube

    2005 GXP / Cartuning Turbo Kit / meth / Cutout / Ported LS4 intake Manifold / HP Tuned / Custom 3" Cat-Back / Highflow Cat / SSC Springs / Poly Dogbone Mount's / 2nd Tranny /
    ( p/o track time12.6@109mph 1.7 60ft )
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  18. #18 Re: 2004 grand prix gt installing a boost gauge what do you have? 
    SE Level Member justin10morrissey's Avatar
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    Quote Originally Posted by boostedcompg View Post
    it didnt come from the factory like that. post up your vin number. either its a gtp or its been swapped. and if its been swapped id sure as hell wanna know if i was you
    vin is 2Gwr524841362931 it has gt badges and gt options headrest dont have the triangle hole and no heads up 3 button dic that only reads trip and date. is it possible that superchargers were an option aside from having the gtp package. i dont believe its a swap under the headlight on the subframe is a gm sticker noting the l32 motor
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  19. #19 Re: 2004 grand prix gt installing a boost gauge what do you have? 
    SE Level Member justin10morrissey's Avatar
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    Quote Originally Posted by brandonl2000 View Post
    someone stole the P off your badge bruh
    gt and gtp badges are completely different i took the t off of my gt badge so its the G ride lol. G for ghetto
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  20. #20 Re: 2004 grand prix gt installing a boost gauge what do you have? 
    I Give Zero Fvcks DreadMcLaren's Avatar
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    The badges on 04+ are not different. The P could have easily came off and you not know it.
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