1. Welcome to The Truck Stop! We see you haven't REGISTERED yet.

    Your truck knowledge is missing!
    • Registration is FREE , all we need is your birthday and email. (We don't share ANY data with ANYONE)
    • We have tons of knowledge here for your diesel truck!
    • Post your own topics and reply to existing threads to help others out!
    • NO ADS! The site is fully functional and ad free!
    CLICK HERE TO REGISTER!

    Problems registering? Click here to contact us!

    Already registered, but need a PASSWORD RESET? CLICK HERE TO RESET YOUR PASSWORD!

Aftermarket Cats

Discussion in 'Intakes and Exhausts' started by schulte, May 4, 2008.

  1. schulte

    schulte ACCELLERANT!!!

    420
    0
    May 4, 2008
    Southern CT
    How much do they usually run.... for 4" or 5" systems?
     
  2. gc427

    gc427 Diesel Mark

    64
    0
    May 4, 2008
    Anaheim, CA
    We don't need no stinkin cats!:hand:
     
  3. Unit453

    Unit453 Cruises comfortably at 140... Staff Member Administrator

    7,123
    1
    Feb 10, 2008
    Bradenton, FL
    Magnaflow makes them but I think they're around 800 bucks...
     
  4. schulte

    schulte ACCELLERANT!!!

    420
    0
    May 4, 2008
    Southern CT
    Thats what I thought. WTF.
     
  5. tomrex

    tomrex Professional Idiot

    New York crackin down on them?
     
  6. Unit453

    Unit453 Cruises comfortably at 140... Staff Member Administrator

    7,123
    1
    Feb 10, 2008
    Bradenton, FL
    Or Magnaflow being retarded with the price?
     
  7. schulte

    schulte ACCELLERANT!!!

    420
    0
    May 4, 2008
    Southern CT
    Not that I know of...
     
  8. schulte

    schulte ACCELLERANT!!!

    420
    0
    May 4, 2008
    Southern CT
    When ONE other company comes out with one, the price will get cut in half.
     
  9. Unit453

    Unit453 Cruises comfortably at 140... Staff Member Administrator

    7,123
    1
    Feb 10, 2008
    Bradenton, FL
    Cats flow quite well actually from all I've read and been told. I also hear the mufflers are more restrictive than cats.
     
  10. tomrex

    tomrex Professional Idiot

    So here's the real question, why do we want a cat? I thought they were the "devil" as well as my stink filter (DPF).
     
  11. whitetrash21

    whitetrash21 Put on the damn helmet day........

    788
    0
    Apr 29, 2008
    Vegas
    i've heard the same, but every time i brought it up, i got shot down. i know the exhaust gasses do some ****ed up rerouting inside the muffler and with the amount of exhaust these trucks move, it could cause a restriction real fast.... i saw a fairly noticable amount of pedal response simply by pulling the muffler out. now i just gotta do the cat so i got a true straight pipe... :D
     
  12. Unit453

    Unit453 Cruises comfortably at 140... Staff Member Administrator

    7,123
    1
    Feb 10, 2008
    Bradenton, FL
    Mine's staying on. I like it mellow.
     
  13. KYLE@XDP

    KYLE@XDP can help you w/ anything

    200
    0
    May 9, 2008
    NJ
    that is true the mufflers have more baffles in them than a cat has screens or mesh. magnaflow cats are nice, expensive yes, but they are ideal if your running no muffler and still wanna keep the tone down, like Nick said some people like it mellow, especially when theya re towing over long distances.
     
  14. Tileman2003

    Tileman2003 Tim the Tileman

    152
    0
    May 17, 2008
    Northern CA
    The muffler shop in town here told me that the cats do flow pretty good.But they also showed me that the restriction is at the inlet to the cat, it is reduced down to about 3''. They want to cut the front off and open it up to 3-1/2" or 4''. Seems like it would work but its cheaper to get a non-cat front pipe...
     
  15. Tom S.

    Tom S. Killing time

    75
    0
    May 4, 2008
    Waterford, MI
    Let me preface this with, I have always been one of those guys who rolled his eyes when someone said they did something simple to their vehicle and it made a huge difference. I guess you could call me "Doubting Thomas". :yesnod:

    However, after I was done modifying my truck with the dual exhaust and Diablo programmer, I replaced the cat with a straight pipe and holy crap - what a difference. It's probably a case of the mods all working together, and just replacing the cat w/o the other stuff might not mean much. :smilewinkgrin:
     
  16. Patrick@HPD

    Patrick@HPD New Member

    36
    0
    Jun 2, 2008
    Steel City!
    4" in and 4" out magnaflow catwould not be 800 bucks. I sell them to the local Ford garage for half that. They have 3.5", 4", and 5". Its still alot of money, but to buy a new factory cat is rediculous!
     

Share This Page