Results 1 to 6 of 6

Thread: Muffler?

  1. #1
    Join Date
    27th May 2009 - 23:34
    Bike
    ducati
    Location
    sth canterbury
    Posts
    27

    Muffler?

    dumb question........do mufflers have to meet any other legal requirments other than noise to be legal?
    for example if i re skin my mufflers i will loose all the specs that are stamped on the outside,will this be an issue at wof time?
    thanks in advance
    rammer

  2. #2
    Join Date
    14th July 2006 - 21:39
    Bike
    2015, Ducati Streetfighter
    Location
    Christchurch
    Posts
    9,082
    Blog Entries
    8
    Quote Originally Posted by rammer View Post
    dumb question........do mufflers have to meet any other legal requirments other than noise to be legal?
    for example if i re skin my mufflers i will loose all the specs that are stamped on the outside,will this be an issue at wof time?
    thanks in advance
    rammer
    Should not be an issue if they are not loud. Some WOF testers are nutters and may fail anything not "stock" .....

    So are you going for snake or sheepskin outers?

  3. #3
    Join Date
    10th May 2009 - 15:22
    Bike
    2010 Honda CB1000R Predator
    Location
    Orewa, Auckland
    Posts
    4,491
    Blog Entries
    19
    I have some vague memory of a regulation saying that it may not be louder than the manufacturer fitted exhaust at 3000RPM or maybe it was 3500RPM.

  4. #4
    Join Date
    14th July 2006 - 21:39
    Bike
    2015, Ducati Streetfighter
    Location
    Christchurch
    Posts
    9,082
    Blog Entries
    8
    Quote Originally Posted by p.dath View Post
    I have some vague memory of a regulation saying that it may not be louder than the manufacturer fitted exhaust at 3000RPM or maybe it was 3500RPM.
    RPM's depend on the motor IL4's are higher than a V twin.

  5. #5
    Join Date
    4th February 2005 - 07:32
    Bike
    Rattlecan blue
    Location
    Auckland
    Posts
    3,963
    The only thing that matters is the noise level. If the sound doesn't draw attention to the muffler they're not going to look into the pipe any further.

  6. #6
    Join Date
    17th July 2009 - 15:26
    Bike
    2006 Suzuki GN250
    Location
    Glenfield Auckland
    Posts
    34
    That is too true Henk.

Thread Information

Users Browsing this Thread

There are currently 1 users browsing this thread. (0 members and 1 guests)

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •