Thread: Pros and cons of going catless

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  1. #1 Pros and cons of going catless 
    GTP Level Member chris99gtp's Avatar
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    Putting on sd headers as i write this. The cat almost looks new. Is it worth reaming out and going catless with the defouler trick or should I just put the cat back In. do I make any gains by going catless?

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    Chris
    99 gtp- Burnt and gone
    01 gtp- Here to stay-3.4, SD Headers, AL104's HAI, Overkill PCM, SD Hood
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  2. #2 Re: Pros and cons of going catless 
    Moderator dsmuts's Avatar
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    The headers have a cat already installed?
    98 GTP modded 1.9's, sd headers, 3.4", zzp 1.0 230K miles scrapped.
    04 Comp G zzp stb's, UMI ta's, Speedbuilt sways, bully flo heads, XP, zzp headers, fsic, thrasher shift kit, 60#, 2.6" corsa 2.5", Inferno hood
    01 gt z7 turbo tep trans zzp motor
    08 g8 gt cam exhaust 11.87@118
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  3. #3 Re: Pros and cons of going catless 
    GTP Level Member chris99gtp's Avatar
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    No I was going to use the one that's in there already
    99 gtp- Burnt and gone
    01 gtp- Here to stay-3.4, SD Headers, AL104's HAI, Overkill PCM, SD Hood
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  4. #4 Re: Pros and cons of going catless 
    Moderator dsmuts's Avatar
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    In the factory dp?
    98 GTP modded 1.9's, sd headers, 3.4", zzp 1.0 230K miles scrapped.
    04 Comp G zzp stb's, UMI ta's, Speedbuilt sways, bully flo heads, XP, zzp headers, fsic, thrasher shift kit, 60#, 2.6" corsa 2.5", Inferno hood
    01 gt z7 turbo tep trans zzp motor
    08 g8 gt cam exhaust 11.87@118
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  5. #5 Re: Pros and cons of going catless 
    GTP Level Member chris99gtp's Avatar
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    Yeah I was going to make something up to keep the shell of the cat so it still looks like I have one
    99 gtp- Burnt and gone
    01 gtp- Here to stay-3.4, SD Headers, AL104's HAI, Overkill PCM, SD Hood
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  6. #6 Re: Pros and cons of going catless 
    Moderator dsmuts's Avatar
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    just go catless it'll be some work for that to work and you could scrap it if its not gutted
    98 GTP modded 1.9's, sd headers, 3.4", zzp 1.0 230K miles scrapped.
    04 Comp G zzp stb's, UMI ta's, Speedbuilt sways, bully flo heads, XP, zzp headers, fsic, thrasher shift kit, 60#, 2.6" corsa 2.5", Inferno hood
    01 gt z7 turbo tep trans zzp motor
    08 g8 gt cam exhaust 11.87@118
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  7. #7 Re: Pros and cons of going catless 
    GTP Level Member chris99gtp's Avatar
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    So pound out the inside and keep the dhell
    99 gtp- Burnt and gone
    01 gtp- Here to stay-3.4, SD Headers, AL104's HAI, Overkill PCM, SD Hood
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  8. #8 Re: Pros and cons of going catless 
    GrandPrix Junkie CTKGP09's Avatar
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    pros being catless = better flow, release more powaa. cons being catless = your exhaust smells worse, and you have to deal with the O2. when it comes down to it theres not much difference, its all in whatever helps you sleep at night
    '04 Chevy Silverado LT 4x4 - intake, headers, full exhaust, zo6 cam, 799 heads, tune, leveled, 33's
    '00 Grand Prix GTP DAYTONA 500 - L36 block, S1X, intercooled, GenV, N*, headers, full exhaust, coilovers, 5 speed swap, stage 3+ clutch
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  9. #9 Re: Pros and cons of going catless 
    Moderator dsmuts's Avatar
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    no just don't use it at all
    98 GTP modded 1.9's, sd headers, 3.4", zzp 1.0 230K miles scrapped.
    04 Comp G zzp stb's, UMI ta's, Speedbuilt sways, bully flo heads, XP, zzp headers, fsic, thrasher shift kit, 60#, 2.6" corsa 2.5", Inferno hood
    01 gt z7 turbo tep trans zzp motor
    08 g8 gt cam exhaust 11.87@118
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  10. #10 Re: Pros and cons of going catless 
    GTP Level Member chris99gtp's Avatar
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    Hmmmm thanks
    99 gtp- Burnt and gone
    01 gtp- Here to stay-3.4, SD Headers, AL104's HAI, Overkill PCM, SD Hood
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