Exhaust, work this out?

1. Dave_mckenzie L-plater Joined: Dec 2011 Darlington Posts: 36 2001 Saxo VTR 1.6

   #1 27th December 2011, 16:07

   Hiya
   
   Bought a massive round back box to fill the hole on the back on me VTR. It came off a VTR MK1 (the lad who i bought it off claimed) so wouldnt fit mine. Had it cut and welded into place but the exhaust is SILENT!, theres gases coming out of it so i know its not blocked....i wanted a bit of a roar to me car and now its even quieter than before!
   
   What can i do to give it that little bit more of a grunt!? i thought a massive exhaust would of!
   
   Thanks
   
   Dave
2. LSOfreak Saxperience Addict Joined: Jan 2008 west london Posts: 13810

   #2 27th December 2011, 16:08

   remove any silencer boxes and decat it
3. Karlb1 Established Member Joined: Jan 2011 Aylesbury Posts: 1868 Seat Leon Cupra tdi

   #3 27th December 2011, 16:10

   Straight through centre pipe to remove any silencers in there, then it'll be loud. But with a massive back box you won't see amuch performance gain if an, you'll just lose back pressure unless it's a decent brand.
4. Dave_mckenzie L-plater Joined: Dec 2011 Darlington Posts: 36 2001 Saxo VTR 1.6

   #4 27th December 2011, 16:10

   what do u mean remove silencer boxes? a friend of mine told me to pull the stuff out of the inside or fill with petrol and burn it out......the thing is, the lad who i bought it off said it was loud already!
5. Dave_mckenzie L-plater Joined: Dec 2011 Darlington Posts: 36 2001 Saxo VTR 1.6

   #5 27th December 2011, 16:11

   im not arsed about performance gains pal, the cars quick enough, just wanted it for a little nicer sound and to fill the bumper
6. Tom5190 Saxperience Post Whore Joined: Sep 2007 Someones Bumhole Posts: 5721 Mk2 16v Desire

   #6 27th December 2011, 16:13

   Dont burn anything out of the silencer thats pikey as out.
   
   Get a centre pipe for it that is straight through. is it a Mk1 vtr?
7. Karlb1 Established Member Joined: Jan 2011 Aylesbury Posts: 1868 Seat Leon Cupra tdi

   #7 27th December 2011, 16:14

   
   
8. Dave_mckenzie L-plater Joined: Dec 2011 Darlington Posts: 36 2001 Saxo VTR 1.6

   #8 27th December 2011, 16:14

   no mate mk2
9. Dave_mckenzie L-plater Joined: Dec 2011 Darlington Posts: 36 2001 Saxo VTR 1.6

   #9 27th December 2011, 16:15

   Quote:

   Originally Posted by Karlb1

   Erm.....ok? lol......dont get it lol
10. Karlb1 Established Member Joined: Jan 2011 Aylesbury Posts: 1868 Seat Leon Cupra tdi

    #10 27th December 2011, 16:17

    
    
    Basically behind the bcak box there should be a long pipe under the middle of the car. This will have 2, maybe 3 boxes along it somewhere?
    
    You need to buy a 'racetube' or 'straight through centre pipe' to get rid of these. This will eliminate any silencing in the exhaust and will result in a loud backbox.
11. Dave_mckenzie L-plater Joined: Dec 2011 Darlington Posts: 36 2001 Saxo VTR 1.6

    #11 27th December 2011, 16:18

    Ahh ok, so im assuming this is "decatting" my car yeah??
    
    Are these expensive?
12. Karlb1 Established Member Joined: Jan 2011 Aylesbury Posts: 1868 Seat Leon Cupra tdi

    #12 27th December 2011, 16:22

    Not quite. a Decat is where you take the catlytic converter out of the car. Since yours is a MK2 vtr im assuming the cat is in the manifold, so getting a cetnre pipe wouldn't decat it, jsut take otu the silencers to give you a bit more noise.
    http://www.kamracing.co.uk/citroen/c...ust-pipes.html These are the pipes in question. Choose one suitable for the year of your car and for your budget. you can buy one with a silencer in it, but since you just want noise that won't be the option for you.
13. Pitbull69 Frequent Poster Joined: Nov 2010 Co Durham Posts: 634 Octavia vRS

    #13 27th December 2011, 16:22

    the cat is at the front of the car, a racetube is not a decat at all. you can get race tubes from about £50 new on ebay less if you look for second hand ones.
14. Dave_mckenzie L-plater Joined: Dec 2011 Darlington Posts: 36 2001 Saxo VTR 1.6

    #14 27th December 2011, 16:26

    so if i get one of these will i get any gain from it and will i need to worry come MOT time?
15. Karlb1 Established Member Joined: Jan 2011 Aylesbury Posts: 1868 Seat Leon Cupra tdi

    #15 27th December 2011, 16:27

    In theory you would gain performance everso slghtly, but not a lot, it will just make it louder since you have a dustbin as your backbox.
    Nope MOT time should be okay in theory, it's when you decat the car you have to worry about MOTs.
16. saxoshaylor189 Newbie Joined: Dec 2011 poole/bournemouth Posts: 24 citroen saxo 1.4 furio

    #16 27th December 2011, 23:09

    simple answer why there is no sound, if its quieter than before its too big for the engine size, de-cat will make it louder but if u wanna save your self a load of trouble just get a smaller box
17. col101 Frequent Poster Joined: Mar 2009 York Posts: 768 VTR

    #17 29th December 2011, 21:51

    Quote:

    Originally Posted by Karlb1 In theory you would gain performance everso slghtly, but not a lot, it will just make it louder since you have a dustbin as your backbox. Nope MOT time should be okay in theory, it's when you decat the car you have to worry about MOTs.

    Technically wrong - if the car has (for example) 3 silencers as std then it should always need 3 to pass the MOT. Having said that I've never failed one or had one of mine fail either. It would be the tightest tester in the world that'd fail a car for that
18. user_32315 Saxperience Post Whore Joined: Mar 2009 Uppingham, Rutland Posts: 9569 mk1 JP4'd VTR, '16 Fabia Monte Carlo

    #18 29th December 2011, 22:22

    Quote:

    Originally Posted by col101 Technically wrong - if the car has (for example) 3 silencers as std then it should always need 3 to pass the MOT. Having said that I've never failed one or had one of mine fail either. It would be the tightest tester in the world that'd fail a car for that

    My mk2 failed mot on exhaust being too loud because neighbours were complaining about the volume so the tester had to stop the mot lol
19. user_45204 Newbie Joined: Jun 2010 Dukinfield, Greater Manchester Posts: 28 Icelandic grey saxo VTR

    #19 31st December 2011, 15:36

    Quote:

    Originally Posted by jeffchiz My mk2 failed mot on exhaust being too loud because neighbours were complaining about the volume so the tester had to stop the mot lol

    haha this made me laugh, i work in a MOT garage and when my boss MOTd my old 106 he had to wear ear defenders lol
20. marinemackay2003 Regular Poster Joined: Nov 2011 wirral Posts: 251 some random saxo

    #20 31st December 2011, 16:36

    just save up and buy a decent exhaust,
    
    manufacturers spend thousands building and testing
    
    should be some cheap second hand ones on the usual places