CLS55 Louder

Discussion in 'AMG Lounge' started by V8 CLS, May 5, 2017.

  1. V8 CLS

    V8 CLS Active Member

    Messages:
    91
    Joined:
    Dec 21, 2015
    Car:
    CLS 55 AMG
    Had X-Pipe installed but car doesnt seem loud enough, especially when revving in neutral (don't do this much but you know what I mean :D)

    Any other suggestions? Ideally want to keep primary cats. Whats best option?
     
  2. ftb

    ftb Hardcore MB Enthusiast

    Messages:
    356
    Joined:
    Nov 16, 2016
    Location:
    Nr Northampton
    Car:
    2010 C220CDI Estate, 2005 CLS55AMG Coupe
    Aftermarket headers add to the noise.
     
  3. Cyclone1

    Cyclone1 Hardcore MB Enthusiast

    Messages:
    1,840
    Joined:
    Jun 6, 2009
    Location:
    Nottingham
    Car:
    W218 CLS63 AMG
    Secondary cat removal and resonator removal will give a decent noise increase.
     
  4. ftb

    ftb Hardcore MB Enthusiast

    Messages:
    356
    Joined:
    Nov 16, 2016
    Location:
    Nr Northampton
    Car:
    2010 C220CDI Estate, 2005 CLS55AMG Coupe
    He said he has an X pipe. My understanding this will replace the resonator?
     
  5. KillerHERTZ

    KillerHERTZ Administrator Staff Member

    Messages:
    16,738
    Joined:
    May 21, 2003
    Location:
    Cambridge
    Car:
    CLS63 AMG
    Stand outside and let someone else rev it. It will be loud already except it's so well insulated you can't hear it that much.
     
  6. Lenny63

    Lenny63 Hardcore MB Enthusiast

    Messages:
    1,230
    Joined:
    Jul 6, 2012
    Location:
    Belfast
    Car:
    CLS 55 AMG
    Its a lot louder than you think on the outside

    I take it the Xpipe replaced your secondary cats, like I did?
     
  7. OP
    OP
    V8 CLS

    V8 CLS Active Member

    Messages:
    91
    Joined:
    Dec 21, 2015
    Car:
    CLS 55 AMG
    Yup, had them removed - - I'll try that. Thanks, must admit in tunnels and under load it's quite loud.
     
  8. Cyclone1

    Cyclone1 Hardcore MB Enthusiast

    Messages:
    1,840
    Joined:
    Jun 6, 2009
    Location:
    Nottingham
    Car:
    W218 CLS63 AMG
    No

    It can replace the resonator but is better placed to replace the secondary cats.......
     
    1 person likes this.
  9. OP
    OP
    V8 CLS

    V8 CLS Active Member

    Messages:
    91
    Joined:
    Dec 21, 2015
    Car:
    CLS 55 AMG
    Ok, car sounds loud enough. You don't get to hear the bark from inside, outside you hear it purr even when at idle. Perfect.

    Thanks all!
     
  10. ftb

    ftb Hardcore MB Enthusiast

    Messages:
    356
    Joined:
    Nov 16, 2016
    Location:
    Nr Northampton
    Car:
    2010 C220CDI Estate, 2005 CLS55AMG Coupe
    For some reason I thought that the resonator is already an x or h pipe in its own right? What is having both better for exactly?
     
  11. Cyclone1

    Cyclone1 Hardcore MB Enthusiast

    Messages:
    1,840
    Joined:
    Jun 6, 2009
    Location:
    Nottingham
    Car:
    W218 CLS63 AMG
    The resonator silences the exhaust, so removing it alone for straight pipes gives a decent increase in noise. Couple its removal with secondary cat delete (normally for an X-pipe) then this will give a very noticeable increase in noise.

    If you do a search on decats / exhausts / X-pipes you'll find the answers to most questions you may have.

    Jules
     
  12. ftb

    ftb Hardcore MB Enthusiast

    Messages:
    356
    Joined:
    Nov 16, 2016
    Location:
    Nr Northampton
    Car:
    2010 C220CDI Estate, 2005 CLS55AMG Coupe
    You see, this is not how I know this to work. Resonator, as the name suggests, is for cancelling the drone. What silences the exhaust is back boxes.

    One either replaces the resonator with an X or H pipe but if left in place with additional X pipe it will lead to the whole exhaust being out of tune.

    What's even worse is adding a smaller diameter X or H pipe as it will introduce a restriction.

    But happy to be re-educated if there's some scientific backup available...
     
  13. b1g1an

    b1g1an Hardcore MB Enthusiast

    Messages:
    1,513
    Joined:
    Dec 12, 2012
    Location:
    Norfolk
    Car:
    Thug in a silk dressing gown
    They effectively have an H pipe up by the secondary cats, it's if you remove them you really do need an H or X added.
     
  14. italian_cls55amg

    italian_cls55amg Hardcore MB Enthusiast

    Messages:
    179
    Joined:
    Jan 12, 2015
    Car:
    CLS 55 AMG
    I had my primary cats removed and resonator deleted. It has the perfect raw v8 sound now. No drone on motorways, just a loud v8 scream when you put your foot down. Also still passes mot as secondary cats are still in place. I couldnt be more happier.
     
  15. Alps

    Alps MB Club Veteran

    Messages:
    7,147
    Joined:
    Nov 29, 2002
    Location:
    London\Essex
    Car:
    E63 Weistec AMG(SOLD), E55 2004 Silver(SOLD), C36 AMG 1997 (SOLD)
    c63 rear boxes will make it a little louder
     
  16. ftb

    ftb Hardcore MB Enthusiast

    Messages:
    356
    Joined:
    Nov 16, 2016
    Location:
    Nr Northampton
    Car:
    2010 C220CDI Estate, 2005 CLS55AMG Coupe
    The joiner before secondary cats is a Mercedes thing. BMWs don't have it. Both come with a resonator where pipes join. When you remove it you need a x/h pipe.
     
  17. b1g1an

    b1g1an Hardcore MB Enthusiast

    Messages:
    1,513
    Joined:
    Dec 12, 2012
    Location:
    Norfolk
    Car:
    Thug in a silk dressing gown
    What...we're talking CLS55s here and mine's definitely a Mercedes, don't know about yours. They have what is effectively an H pipe at the secondary cats so if you just remove the resonator you can use straight pipes with no issues. You can't remove the secondary cats without losing the crossover though so in that instance you'll need to add one.

    Been discussed on here many times.
     
Tags:

Share This Page

  1. This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
    By continuing to use this site, you are consenting to our use of cookies.