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Thread: 2009 Ultra w/ power duals and SE FatShots

  1. #1
    harleymailman Guest

    Default 2009 Ultra w/ power duals and SE FatShots

    I have SE race tuner, Stage 1 air filter, V+H Pwerduals, and SE FatShots.
    I have 10 discs on both sides(that is how it came) w/ open end. No CAT..
    My question is there a way to increase sound, Louder. I did not know the specs of these until after. The guy at the dealer talked me into them. They perform well. Just was looking for a Louder sound. And if any changes, will it have to be retuned? Thanks
    Last edited by harleymailman; 05-20-2011 at 06:17 AM.

  2. #2
    Join Date
    Jul 2007
    Posts
    443

    Default

    You could add more discs, but will probably loose botom end as well.
    How long have they been on the bike? Typically they will get a slight bit louder with some time on them, but very slight?

  3. #3
    harleymailman Guest

    Default

    I have had them for at least a year, a couple thousand miles. Do I need to retune if adding disc? How many disc? What do you mean by losing Bottom End?

  4. #4
    Join Date
    Jul 2007
    Posts
    443

    Default

    no re-tune should be required.

    Bottom end; low RPM torque.

    Those mufflers work best with your bike with 10 discs and the closed cap=more backpressure.

  5. #5
    harleymailman Guest

    Default

    So if I want the best out of what I have, I need to change from open end to closed end cap, and stick with the same 10 disc.

  6. #6
    Join Date
    Jul 2007
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    443

    Default

    Yes to get better bottom/mid range power, the closed cap will work better.
    That doesn't help with increasing sound however-sorry.

  7. #7
    Join Date
    May 2009
    Posts
    16

    Default

    Quote Originally Posted by jwells View Post
    Yes to get better bottom/mid range power, the closed cap will work better.
    That doesn't help with increasing sound however-sorry.
    Question could you install the Open End Cap and just put one or two discs, would this give you more sound and still have the botton/mid range power??

  8. #8
    bschultz Guest

    Default

    Yes, an open end cap flows for 10-12 discs.

  9. #9
    Join Date
    May 2009
    Posts
    16

    Default

    Ok, I have a 09 Ultra No/Cat running a 96" motor with SE 255 Cams , SE A/C & SE Fatshotz with 16 discs and closed end caps,,the bike runs Great,, If I go with open end caps (looking for more sound) about how many discs will I need and will I have the same low/mid power that I have now?


    Also will I need shorter screws?

  10. #10
    bschultz Guest

    Default

    6 per side w/open end cap, no need for shorter screws.

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