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Catalytic converter

Discussion in 'Performance and Tuning' started by Bosox, Sep 20, 2012.

  1. Sep 20, 2012 at 9:09 PM
    #1
    Bosox

    Bosox [OP] New Member

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    Is it worth installing a "high flow" converter? Most things I've read say there really isn't such a thing, your exhaust is just filtered different
     
  2. Sep 20, 2012 at 9:14 PM
    #2
    Rich91710

    Rich91710 Well-Known Member

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    There is such a thing, but without additional mods, it's not going to help, and if you have smog testing, your readings will be higher.
     
  3. Sep 20, 2012 at 9:17 PM
    #3
    ironman_jon

    ironman_jon Well-Known Member

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    Just put DTLTs, Urd Y-pipe and the muffler of choice and be done with it :)

    If you dont have smog testing, AZ doesnt have it :cool:
     
  4. Sep 21, 2012 at 8:37 AM
    #4
    Bosox

    Bosox [OP] New Member

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    I have a flowmaster muffler on and plan on a cold air... Real soon. I'm not a very mechanical person so this may dumb but I don't know the abrreviation dtlts means. The y pipe to make it dual exhaust? I do appreciate the advice.
     
  5. Sep 25, 2012 at 9:39 PM
    #5
    Tacomayco

    Tacomayco Tacomayco

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    DTLY= Doug Thorly Long Tube Headers
     
  6. Sep 26, 2012 at 2:03 AM
    #6
    xxOkieTacoxx

    xxOkieTacoxx "The Mechanic"

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    I've been thinking about a new cat too. I have a super 35 flomaster and cool air intake. Woulda new cat help at all? Or what other mods are you taking about rich?
     
  7. Sep 26, 2012 at 2:38 AM
    #7
    ironman_jon

    ironman_jon Well-Known Member

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    Cats restrict the flow of the exhaust out of the vehicle. If u increase the flow of the air in and out if the vehicle ur going to gain performance but not to the point where u lose back pressure through the system.

    If you don't have a smog check go with a set of DTLT if u have smog go with the shorty version and weld the cats on and u will still pass smog.

    The y-pipe connects the headers/manifolds to the catback. Urd/ Doug Thorley etc make version of the y-pipe.

    If you have a smog check in ur state its not a good idea to take the cats off cuz u will fail the smog check that's why there are 2 versions of both headers from DT.

    If anyone has anything to add and or correct feel free.
     
  8. Sep 26, 2012 at 8:40 AM
    #8
    Tacomayco

    Tacomayco Tacomayco

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    What I did is remove the two rear Cats, since we have 4. The two front cats have the sensors. It sounds waaay better without d rear cats
     
  9. Sep 27, 2012 at 7:04 AM
    #9
    xxOkieTacoxx

    xxOkieTacoxx "The Mechanic"

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    My state dosent have a smogg test. How hard is it to remove the cats and fool the sensors?
     
  10. Sep 27, 2012 at 7:08 AM
    #10
    whippersnapper02

    whippersnapper02 Well-Known Member

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    Long tubes and a Y pipe will get rid of them and an O2 simulator for the light. Less low end power FTW!

    "High Flow" cats are worthless.
     
  11. Sep 27, 2012 at 12:34 PM
    #11
    ironman_jon

    ironman_jon Well-Known Member

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  12. Sep 27, 2012 at 12:39 PM
    #12
    ironman_jon

    ironman_jon Well-Known Member

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  13. Sep 27, 2012 at 11:28 PM
    #13
    Tacomayco

    Tacomayco Tacomayco

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    Yea im planning on getting the MAF Sensor from URD.
    I have my current JET MAF for sale, its a good add on, but im about to put my s/c in the next few weeks so i need to get a tuned one from urd.
    Its a JET maf sensor. My truck wouldnt spin the tires on take offs, after the Jet maf it does for 2 secs. so it a good add on for 100$ shipping included.
     
  14. Sep 28, 2012 at 12:51 PM
    #14
    xxOkieTacoxx

    xxOkieTacoxx "The Mechanic"

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    Less low end power? I don't like that ....
     
  15. Sep 28, 2012 at 8:37 PM
    #15
    s7racing

    s7racing Well-Known Member

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    I don't know about headers with the y pipe, but I have the long tubes and there is no low end power loss, in fact I have more power from 2000 rpm up.
     
  16. Sep 28, 2012 at 8:42 PM
    #16
    whippersnapper02

    whippersnapper02 Well-Known Member

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    Dyno?
     
  17. Sep 28, 2012 at 8:45 PM
    #17
    benbacher

    benbacher Purveyor of Fun Vendor

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    More noise = more power.
     
  18. Sep 28, 2012 at 8:46 PM
    #18
    Blacktacoma23

    Blacktacoma23 The Dank Tank

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    Thats how I feel about 3,000rpm up^
     
  19. Sep 28, 2012 at 9:13 PM
    #19
    s7racing

    s7racing Well-Known Member

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    no dyno within 200 miles of me. I added MAF CAL, AFE stage 2, and long tubes at the same time, so technically I can't speak for just the headers alone. But I can now go up freeway grades in 6th gear without losing speed while before I would slow down. These are grades I drive everyday and at the same speed so it an accurate gauge of low end power. That's just as good as any dyno for me. Do you have long tubes? Did you notice low end loss?
     
  20. Sep 28, 2012 at 9:37 PM
    #20
    whippersnapper02

    whippersnapper02 Well-Known Member

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    I just know how exhaust works. The reason for the low end loss is because you lose the front cats.
     
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