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Anyone Running NO Cats at all?

Discussion in 'Performance and Tuning' started by Johnny_knox69, Sep 17, 2008.

  1. Sep 17, 2008 at 9:18 AM
    #1
    Johnny_knox69

    Johnny_knox69 [OP] Well-Known Member

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    Anyone running no cats at all? What did it do to your Gas? What about the Computer issues? (like no o2 sensers)

    I can run what ever I want here in WV, want to go full headers and remove the cats. Not sure on the gas or performance.....

    Rock on!
     
  2. Sep 17, 2008 at 10:57 AM
    #2
    tacoskim

    tacoskim Tuned By Gadget

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    if u dont have 02 sensors then u will throw a CEL code... ive heard tacos with no cats at all and it sounds pretty bad, raspy and loud as hell. but hey whatever floats ur boat, alot of guys run long tubes with the urd y-pipe and good performance but will lose low end power. check youtube they have lots of videos with that set up
     
  3. Sep 17, 2008 at 11:00 AM
    #3
    tacoskim

    tacoskim Tuned By Gadget

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  4. Sep 17, 2008 at 11:02 AM
    #4
    tacoskim

    tacoskim Tuned By Gadget

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  5. Sep 17, 2008 at 3:30 PM
    #5
    Brunes

    Brunes abides. Staff Member

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    I think the rasp in that was intake noise- maybe a S/C even- cause it kicks in after the accelerator was released.
    Low end power loss would be my main concern- A lil bit of back pressure isn't a bad thing.
     
  6. Sep 17, 2008 at 3:36 PM
    #6
    Johnny_knox69

    Johnny_knox69 [OP] Well-Known Member

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    So you guys think keep 1 set of cats?.............Cats are good?
     
  7. Sep 17, 2008 at 3:36 PM
    #7
    tacoskim

    tacoskim Tuned By Gadget

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    if ur a tree hugging hippie
     
  8. Sep 17, 2008 at 3:39 PM
    #8
    Johnny_knox69

    Johnny_knox69 [OP] Well-Known Member

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    Thats funny....lol with a stock truck would it makes since to remove all cats? Get a programmer of some sort and trick the O2 sensors? Or keep 1 set to have some back pressure?
     
  9. Sep 17, 2008 at 3:46 PM
    #9
    Brunes

    Brunes abides. Staff Member

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    What are you trying to do?? Race the truck, Tow with the truck, or get a specific sound??

    Each one of those has a different theory behind it.
     
  10. Sep 17, 2008 at 3:47 PM
    #10
    tacoskim

    tacoskim Tuned By Gadget

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    either way ur not gonna be stock cuz ur first set of cats are connected to stock headers... when u get the doug thorley long tubes theres someting u can get to trick the 02 sensor
     
  11. Sep 17, 2008 at 4:12 PM
    #11
    Johnny_knox69

    Johnny_knox69 [OP] Well-Known Member

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    really just want more power, sound. I do tow 5000# several times a year.
     
  12. Sep 17, 2008 at 4:17 PM
    #12
    Johnny_knox69

    Johnny_knox69 [OP] Well-Known Member

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    Also I am in an area that I don't have to have the Cats if it benefits me more.......Most guys have to keep them so it makes it hard to get a good answer i guess
     
  13. Sep 17, 2008 at 6:08 PM
    #13
    Ridingontrd

    Ridingontrd Well-Known Member

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    Towing that much weight you'll need the low end torque.For sound,just replace your muffler.Lot cheaper too.:)
     
  14. Sep 17, 2008 at 6:37 PM
    #14
    beastlytaco

    beastlytaco This is TW. One never knows what is a joke anymore

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    yeah i also have a question. im seriously thinking of running doug thorley shortys on my 08 reg cab 4x2. but if i get rid of one set of the front cats and get my rear cats welded on would i still pass emisions??
     
  15. Sep 17, 2008 at 8:15 PM
    #15
    XrunnIT

    XrunnIT Well-Known Member

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    Dito.. if you going to be doing a lot of towing, you'll want to keep your backpressure up for that low end torque, or invest in a supercharger, then pull the cats to make more power.

    Depends on the test. I haven't heard of a truck passing or failing with one set of cats, so it could go either way. I wouldn't hold my breath on it if it was sniffer test though.
     
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