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diesel decat

  • 01-08-2009 1:22am
    #1
    Socymonster
    Closed Accounts Posts: 15 ✭


    hey guys, just wondering if anyone has decated a diesel. does it make a difference to performance and exhaust sound??


Comments

  • #2
    biomech
    Registered Users, Registered Users 2 Posts: 89 ✭✭biomech


    can you please explain the term decat??


  • #3
    Mr Benevolent
    Closed Accounts Posts: 12,456 ✭✭✭✭Mr Benevolent


    He means to rip out the cat and let all the diesel goodness flow into the air.


  • #4
    Gumbo
    Moderators, Society & Culture Moderators Posts: 40,366 Mod ✭✭✭✭Gumbo


    biomech wrote: »
    can you please explain the term decat??

    your cat is one of the most restrictive parts of the exhaust system, so by replacing it with a decat pipe you get the gases flowing much quicker and hence more power.
    Confab wrote: »
    He means to rip out the cat and let all the diesel goodness flow into the air.

    not, neccessarily, they can be got in either a straight cyclinder pipe with flanges to join onto your existing exhaust and you can also get legal, NCT passable high flow cat pipes.

    they work on performance NA cars and on petrol turbo cars, so theres no reason they shouldnt work on a diesel, but ive never tried it myself.


  • #5
    biomech
    Registered Users, Registered Users 2 Posts: 89 ✭✭biomech


    oh right.... another question... when did they start putting cats in diesels??? have a bit of diesel experience but only with one car type and ders none in it.


  • #6
    rufio306
    Closed Accounts Posts: 64 ✭✭rufio306


    iirc they only emmision test diesels after 2001/2. before that is only a smoke test.

    a decat can benefit some diesels, what car/engine is it?


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  • #7
    Socymonster
    Closed Accounts Posts: 15 ✭Socymonster


    It's a pug 306 1.9 d-turbo mate


  • #8
    rufio306
    Closed Accounts Posts: 64 ✭✭rufio306


    thought so some how.

    get one on there, youll see a bit of an improvent, had one on my old dt, frees up the revs.

    you can get them for around £20 too, just order a downpipe from a early ph1 dt, they didnt come with particulate filters.

    little awkward and fiddly to fit though, ramp isnt completely necessary but will make life alot easier. best to get a new gasket/fitting kit too.

    jobs a good un!


  • #9
    Socymonster
    Closed Accounts Posts: 15 ✭Socymonster


    Legend. thanks for that. I've already turned the pump a small bit, nct is in 2 months, when it's done i'm going turning the boost up.


  • #10
    rufio306
    Closed Accounts Posts: 64 ✭✭rufio306


    you should see a small increase in boost with the fuel up alone have you got a boost gauge? if not defintley get one if youll be playin around with the boost.


  • #11
    Socymonster
    Closed Accounts Posts: 15 ✭Socymonster


    Yeah it made a huge difference to her, she's not pumping much black smoke either. yeah i was told they'll hold out to 20psi, after that she could explode!!:D


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