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  1. #1 Straight Pipe? 
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    Will I lose power if I straight pipe my 2000 grand prix gt from cat back...?
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  2. #2 Re: Straight Pipe? 
     

  3. #3 Re: Straight Pipe? 
    Max Cook
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    Possibly. You'll probably also want to lose your hearing. It will sound dreadful.
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  4. #4 Re: Straight Pipe? 
    I live here. 02NavyBlue's Avatar
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    Yeah don't. If you want loud, the furthest anyone on this forum would go as far as advice, is at least keep a real nice resonator in there.
    2006 Grand Prix GT S/C 109k - Modded Transgo Shift Kit, Gutted Airbox, Dash Cam, and Inlays. Retros soon to come.
    2002 Grand Prix GT N/A 127k - Same as 06 Plus: Trans Cooler, DIY Aux Input, LED lighting, Suspension Upgrades, Tint, Retrofits.
    Sold.
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  5. #5 Re: Straight Pipe? 
    SE Level Member 13aceofspades13's Avatar
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    Quote Originally Posted by 02NavyBlue View Post


    Yeah don't. If you want loud, the furthest anyone on this forum would go as far as advice, is at least keep a real nice resonator in there.
    that sounds horrible DX

    "Foxy" 2008 Pontiac Grand Prix Base model, Intake, 5.5 water pump pulley, thrush turbo muffler, flipped dogbones, MSD 8.5MM super conductor Wires, Accel super coils.
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  6. #6 Re: Straight Pipe? 
    GT Level Member cmal37's Avatar
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    My car has headers and stock mufflers. It was done from a budget standpoint, it was cheapest. loud, sounds pretty terrible. but I did out run a guy with an almost exact same modded car, but he had a stock cat back... so maybe you can gain power!
    GMPP Struts, F body brakes, CAI, Ubend, resonator, and cat delete, 180tstat, SD headers, 3.4 Pulley, OverKill PCM,http://www.grandprixforums.net/my-bl...res-60017.html
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  7. #7 Re: Straight Pipe? 
    I live here. 02NavyBlue's Avatar
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    The headers will help. Catback exuaust will see little to no gain up until something like 350 WHP
    2006 Grand Prix GT S/C 109k - Modded Transgo Shift Kit, Gutted Airbox, Dash Cam, and Inlays. Retros soon to come.
    2002 Grand Prix GT N/A 127k - Same as 06 Plus: Trans Cooler, DIY Aux Input, LED lighting, Suspension Upgrades, Tint, Retrofits.
    Sold.
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  8. #8 Re: Straight Pipe? 
    Turbo is the way to go. REDCRAPGP's Avatar
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    Yea I wouldn't recommend straight piping it, it sounds like pure anus. See video above as evidence.
    Squirrels are my engine. I need a Ford Regal
    04 Comp G.
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  9. #9 Re: Straight Pipe? 
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    and does it hurt the engine what so ever? like long term? or short term?
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  10. #10 Re: Straight Pipe? 
    DUI BABY Bio248's Avatar
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    after all of us saying it'll be a terrible idea, you come back with that?

    the answer is no, it won't. honestly, though, you should just stop while your ahead. the stock exhaust is by far the best option for these cars.
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  11. #11 Re: Straight Pipe? 
    SE Level Member jkroll17's Avatar
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    Im not sure... Pretty sure if you have headers and straight pipe on a N/A you lose low end torque. Prettyyyyyyyy sure.
    2000 gt coupe I'm on a first name basis with tow truck drivers
    New crate 3800 v6 N/A, Borla exhaust, crappy K&N cold air intake. The rust makes my car lighter and faster.
    >> http://www.grandprixforums.net/showthread.php?t=83513 <<
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  12. #12 Re: Straight Pipe? 
    GrandPrix Junkie Sandman's Avatar
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    The power band just moves up with exhaust work. These motors have plenty of low end grunt anyways.
    05 Saab 9-2X Linear (Saabaru)
    77 Morris Garage B
    Quote Originally Posted by TLSheff View Post
    You said "I'm done with it"... car says "Oh, really? *trollface*"
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  13. #13 Re: Straight Pipe? 
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    Cam and headers with stock exhaust ftw!! personally I hate v6 straight piped 3800's lol sounds horrible I've heard too many rd my parts I wouldn't do it

    Sent from my SAMSUNG-SGH-I747 using Tapatalk
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  14. #14 Re: Straight Pipe? 
    GTX Level Member nos4blood70's Avatar
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    Please no.
    -Carl
    "Penelope" - 145k Miles 2003 Bonneville SLE


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  15. #15 Re: Straight Pipe? 
    SE Level Member 13aceofspades13's Avatar
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    straight pipe is not worth it on these cars, it would be loud and obnoxious... no it would not hurt your engine, no it would not result in a loss of power but you will probably see no gain in power, and if you remove the catalytic converter you may succeed in turning your engine light on!

    "Foxy" 2008 Pontiac Grand Prix Base model, Intake, 5.5 water pump pulley, thrush turbo muffler, flipped dogbones, MSD 8.5MM super conductor Wires, Accel super coils.
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  16. #16 Re: Straight Pipe? 
    GXP Level Member darkhorizon's Avatar
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    I run my GTP res only... because im too lazy to fix the rusted broke catback.

    Its cool because its a GTP and I live in flint.
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  17. #17 Re: Straight Pipe? 
    GXP Level Member darkhorizon's Avatar
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    I run my GTP res only... because im too lazy to fix the rusted broke catback.

    Its cool because its a GTP and I live in flint.
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  18. #18 Re: Straight Pipe? 
    GTP Level Member AjL227's Avatar
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    Please don't do it.
    '04 CompG "WS6"
    '00 2.5RS "GM6"
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  19. #19 Re: Straight Pipe? 
    GTX Level Member SnowTh1ef's Avatar
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    Please no, just no. Frosty's downpipe popped off at the track and I basically went deaf after taking it for a couple runs, which honestly was a better option than hearing a 3800 with no res or mufflers.
    04 GTP -HAI, 1.9 rockers.
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