De-Cat Question ¬_¬

  1. Regular Poster Joined: Nov 2010 London Posts: 343 Silver VTR
    #1
    Ok Got the deposit down on my vtr, getting her at the weekend

    Probably going to go for a saxsport 2'' with decat, just a thought though, obviously for MOT and stuff you need a cat, on kamracing I saw a janspeed 4-2-1 mani with sports cat, for MOT, Can i just literally add the Sports Cat to the Decat pipe or does the whole system need to be replaced?

    - Sorry for the extremely stupid question but with cars, Mechanically-wise I'm useless!
  2. Established Member Joined: May 2009 cleethorpes, Lincolnshire Posts: 1830 Astra 2006 (55) 1.9 cdti 150 sri 192hp 322ftlb
    #2
    it depends if the decat and sports cat are welded to the pipe then a whole centre pipe will need to be done but of you can remove the cat/decat as a single unit you can just swap around
  3. Regular Poster Joined: Nov 2010 London Posts: 343 Silver VTR
    #3
    http://www.kamracing.co.uk/citroen/c...vtr-00-03.html

    thats the mani and cat obvs the cat is not welded there, below is the exhaust system, does anyone know if the cat would be a straight swap?

    http://saxsport.co.uk/
  4. Saxperience Post Whore Joined: Dec 2006 Maidstone Posts: 8210 Golf TDI
    #4
    The downpipe of the sports cat will connect to the Saxsport, no need to mess about.

    Personally I would just get an aftermarket manifold and stick the standard cat back on come MOT time. Would be £200-£300 cheaper and not exactly hard.
  5. L-plater Joined: Feb 2012 London Posts: 57 Saxo VTS RENAULT 5GT
    #5
    Do you think a sports cat is going to make as bigger difference and no cat?? Personally i think id be decatting and having a nice chat with the mot station...
  6. L-plater Joined: Feb 2012 London Posts: 57 Saxo VTS RENAULT 5GT
    #6
    Quote:
    Originally Posted by iN7eL View Post
    http://www.kamracing.co.uk/citroen/c...vtr-00-03.html

    thats the mani and cat obvs the cat is not welded there, below is the exhaust system, does anyone know if the cat would be a straight swap?

    http://saxsport.co.uk/
    Is it me or am i looking at this really wrong.... Thats a 4-1 not a 4-2-1 ???
  7. Regular Poster Joined: Nov 2010 London Posts: 343 Silver VTR
    #7
    So when ordering, Should i be ordering the Straight through system with de-cat and purchase the sports cat to go onto it? Or should i be purchasing the cat back system and put the sports cat on, surely thats a lot quieter? I'm So confused haha
  8. L-plater Joined: Feb 2012 London Posts: 57 Saxo VTS RENAULT 5GT
    #8
    Get the decat and stright through and when the mot comes, just put your orignal cat back on for an hour.......
  9. Regular Poster Joined: Nov 2010 London Posts: 343 Silver VTR
    #9
    Yeah, Im just really useless at that stuff which would mean I pay each time, is it hassle to get on and off?
  10. Saxperience Post Whore Joined: Dec 2006 Maidstone Posts: 8210 Golf TDI
    #10
    These are general rules, there are a few exceptipns...

    If you have a Mk1 VTR then the Cat is under the car so can be swapped out easily.

    If you have a Mk2 VTR then the cat forms part of the manifold so you would need to remove the manifold and refit the old one (and the cat as part of it)
  11. Regular Poster Joined: Nov 2010 London Posts: 343 Silver VTR
    #11
    LONG - Basically, best option like mentioned would be either get the straight through de-cat and keep the old cat-back to swap over with the old mani ORRRRRRRRRR

    Purchase the Catback or Straight through de-cat? and purchase the 4-2-1 mani and sports cat, my other question, can the Sports cat with new mani be added to the de-cat to make it road legal or would I have to purchase the cat-back version and then obv add the mani and sports cat