1. After 20+ years it's time to pass the torch. If you are interested in acquiring this forum please contact support@cv-performance.com for details. Any spam will be reported and blocked.
  2. Welcome to Bike Talk, a forum for all bikers and motorcycle enthusiasts. If you are new to Bike Talk, be sure to register for free and join the conversation.

    There's always someone around willing to help out with questions or give a friendly wave back. All Harley and metric riders are welcome.
Bike Talk Motorcycle Forum is For Sale Welcome to Bike Talk

New mufflers, do I HAVE to re-jet?

Discussion in 'Motorcycle Tech Talk' started by Rhots, Apr 1, 2010.

  1. Rhots

    Rhots New Member

    Joined:
    Apr 1, 2010
    Messages:
    11
    Likes Received:
    0
    Hi, I just had new cam chains and tensioners put on my '02 FLHTC.
    One of my pipes was cracked so I found a complete used system with only 5000 miles on it, which included aftermarket mufflers. The previous owner was told when he bought the bike used that they were Screamin Eagles (He went to true duels) . But there are no markings on them. But they are what I wanted to put on anyway for the louder sound. The tech told me I might have to re-jet the carb.
    I guess my question is this....if it seems to run okay with more open exhaust and a stock air cleaner, can the engine be damaged if it is running lean. I assume if it was running "real" lean I would notice it. But if the difference from before is not that noticeable can the engine get hurt.
    I am not into performance. My 2 main concerns are reliability and good fuel mileage.
    Thanks for your time,
    Rick
    Rhots, Apr 1, 2010
    #1
  3. ReeseSS

    ReeseSS New Member

    Joined:
    Dec 9, 2006
    Messages:
    171
    Likes Received:
    0
    Location:
    Cape Coral, Florida
    If you are still using a stock air cleaner, then just slip ons have very little, if any, affect on the air/fuel ratio.
    ReeseSS, Apr 1, 2010
    #2
  4. Rhots

    Rhots New Member

    Joined:
    Apr 1, 2010
    Messages:
    11
    Likes Received:
    0
    Thanks for the reply Reese! I hope you are right!
    Makes me a little nervous, don't want to cook the engine just because I love that Harley sound!
    Maybe a few more would like to confirm.

    Rick
    Rhots, Apr 1, 2010
    #3
  5. FLHTbiker

    FLHTbiker Moderator Staff Member

    Joined:
    Nov 3, 2004
    Messages:
    18,516
    Likes Received:
    252
    Location:
    Oregon
    You do not need to do a thing except put the exhaust on and ride it. If you change the air cleaner to a SE type then you would need some type of fuel mapping device.
    FLHTbiker, Apr 1, 2010
    #4
  6. chucktx

    chucktx Moderator Staff Member

    Joined:
    Jul 5, 2005
    Messages:
    12,545
    Likes Received:
    10
    what they said!!!!!!!
    chucktx, Apr 1, 2010
    #5
  7. Rhots

    Rhots New Member

    Joined:
    Apr 1, 2010
    Messages:
    11
    Likes Received:
    0
    Thanks a lot guys. It seems to be running the same as it was before. The only thing I am going to do, which I was going to do anyway is to adjust the idle mixture. I 'm getting pretty tired of it stalling at intersections when I go to take off.
    Thanks again,
    Rick

    RIDE SAFE!
    Rhots, Apr 2, 2010
    #6
  8. Art_NJr

    Art_NJr New Member

    Joined:
    Mar 16, 2008
    Messages:
    884
    Likes Received:
    0
    Location:
    North Carolina
    You can think of your engine as an air pump - you can't get any more out of it than it can take in & the air-cleaner is the limiting factor.
    Art_NJr, Apr 3, 2010
    #7

Share This Page

XenPorta © Jason Axelrod from 8WAYRUN.COM