Thread: Catalytic Converter Removal 99 Grand Prix GT Coupe *HELP*

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  1. #1 Catalytic Converter Removal 99 Grand Prix GT Coupe *HELP* 
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    so due to my catalytic converter being clogged i am now removing it but my uncle tells me that its going to cost alot with getting a shop to do it and the welding and what not..... whats the cheapest route i can go?? i have already ordered an O2 Emulator from ZZP Performance. Its in thew mail.

    So I want to remove my catalytic vonverter.... What is the easiest and cheapest way to do this??? i will eventually put on flowmaster mufflers with alll new exaust

    HELP!
    Last edited by blortz; 09-26-2010 at 08:28 PM. Reason: WRONG PARTS!
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  2. #2 Re: Straight Piping 99 Grand Prix GT Coupe *HELP* 
    DUI BABY Bio248's Avatar
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    i would advise against straight piping. sure, delete your cat if you want, but your car is gonna sound like crap without a resonator or mufflers.
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  3. #3 Re: Straight Piping 99 Grand Prix GT Coupe *HELP* 
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    sorry thats what i mean ...i just want to remove my catalytic converter......
    Last edited by blortz; 09-26-2010 at 08:28 PM. Reason: Wrong Wording
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  4. #4 Re: Catalytic Converter Removal 99 Grand Prix GT Coupe *HELP* 
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    Get a downpipe and be done.
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  5. #5 Re: Catalytic Converter Removal 99 Grand Prix GT Coupe *HELP* 
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    and where would i buy such a down pipe that eliminates my cat? does it just bolt on orrr???????
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  6. #6 Re: Catalytic Converter Removal 99 Grand Prix GT Coupe *HELP* 
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    ZZ Performance

    W Body Store

    Hogan Performance W-Body 3" Stainless Steel Downpipe with Off-Road Pipe: 3800 Performance

    Just get a 3" bolt in catless downpipe.

    Up to you if you want stainless or mild steel.

    This will eliminate your cat and bolt right in.
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  7. #7 Re: Catalytic Converter Removal 99 Grand Prix GT Coupe *HELP* 
    Donating Users Lawngoose's Avatar
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    Quote Originally Posted by matt5112 View Post
    ZZ Performance

    W Body Store

    Hogan Performance W-Body 3" Stainless Steel Downpipe with Off-Road Pipe: 3800 Performance

    Just get a 3" bolt in catless downpipe.

    Up to you if you want stainless or mild steel.

    This will eliminate your cat and bolt right in.
    I agree... or find a local who can weld... and slip him so cash to hook you up. Take him your stock dp...then cut the cat...and put a straight pipe.
    02 GTP 13.6 @ 100mph - SOLD
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  8. #8 Re: Catalytic Converter Removal 99 Grand Prix GT Coupe *HELP* 
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    yeah see my girlfreinds uncle is going to do it... he will take off the down pipe and remove it and use a straight piece of pipe and weld it on... but he said it needed to be bent?? or soemthing..... i think that would be costly... he is also replacing one 02 sensor and i have an emmulator...
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  9. #9 Re: Catalytic Converter Removal 99 Grand Prix GT Coupe *HELP* 
    The Blue One blueguy's Avatar
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    Why would you replace the o2 sensor if you have an emulator...unless you mean your replacing the top o2. Also...nothing needs to be removed DP wise...he just needs to cut out the cat/u-bend...weld in the piece of straight pipe...and done. Zip tie your emulator to your frame or something...and throw out your old rear o2. Problem solved.
    Sold WBody's: '03 Blue GTP/'98 Green GTP/'98 Silver GT/'05 GXP
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    '04 Chevrolet Corvette MRM A4/LS1 - TSP LT's, 3"O/R X, AFE S2 CAI
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  10. #10 Re: Catalytic Converter Removal 99 Grand Prix GT Coupe *HELP* 
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    All done sounds sick! Thanks guys!
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  11. #11 Re: Catalytic Converter Removal 99 Grand Prix GT Coupe *HELP* 
    Turbo is the way to go. BillBoost37's Avatar
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    You mean it makes you sick to hear how loud it is?
    I drink..so consider that when reading my posts.

    2010 Audi A6 Dual IC's
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  12. #12 Re: Catalytic Converter Removal 99 Grand Prix GT Coupe *HELP* 
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    lol no its not that loud it still has stock muffler plus thats where dynamat comes in
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  13. #13 Re: Catalytic Converter Removal 99 Grand Prix GT Coupe *HELP* 
    Turbo is the way to go. BillBoost37's Avatar
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    Right..Isolate yourself from it while torturing the poor guy next to you. Gotcha
    I drink..so consider that when reading my posts.

    2010 Audi A6 Dual IC's
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  14. #14 Re: Catalytic Converter Removal 99 Grand Prix GT Coupe *HELP* 
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    Quote Originally Posted by blortz View Post
    so due to my catalytic converter being clogged i am now removing it but my uncle tells me that its going to cost alot with getting a shop to do it and the welding and what not..... whats the cheapest route i can go?? i have already ordered an O2 Emulator from ZZP Performance. Its in thew mail.

    So I want to remove my catalytic vonverter.... What is the easiest and cheapest way to do this??? i will eventually put on flowmaster mufflers with alll new exaust

    HELP!
    Your uncle is correcr. You need to spend much money on it. But one way to lessen your expenses that if you have an acquaintance that gives you discount.
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  15. #15 Re: Catalytic Converter Removal 99 Grand Prix GT Coupe *HELP* 
    The mod from over yonder TheOtherNick's Avatar
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    He has had it fixed for a few days now.
    01 gtp-big cam e85 dd 78dodge- guzzling fuel 05 cummins- rollin coal
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  16. #16 Re: Catalytic Converter Removal 99 Grand Prix GT Coupe *HELP* 
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    And it was fairly cheap 50$ for labour and 20$ for parts
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  17. #17 Re: Catalytic Converter Removal 99 Grand Prix GT Coupe *HELP* 
    The Blue One blueguy's Avatar
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    What parts do you need to gut a cat besides a BFSD you don't care about?

    I see the labor...but parts? LOL Cut out cat...gut it...reweld.
    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
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    '89 Ford Mustang LX Notchback - LM7 5.3, 4L80, 9", HX40
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  18. #18 Re: Catalytic Converter Removal 99 Grand Prix GT Coupe *HELP* 
    Donating Users squeaks130's Avatar
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    Maybe parts $20 equals case of beer while you do it?
    00 GT- Tint, Pre-gens, Hopes and Dreams
    91 F-150 4.9L, Pipes, tint, 2 inch lift, and 35's

    Little boys wear bow ties. Big boys drive FORD
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  19. #19 Re: Catalytic Converter Removal 99 Grand Prix GT Coupe *HELP* 
    The Blue One blueguy's Avatar
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    Or the gas to get there?
    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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