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Thread: Supermegs vs. Thunderheader

  1. #1
    trongoire1 Guest

    Default Supermegs vs. Thunderheader

    I have an '09 96" HD Road Glide. Its stock except for a K&N high flow breather and a 2-1 Thunderheader. This winter I will be installing a 2-1 Supermegs. I've read that 16 disks with a closed cap will flow approx. 210 CFM. My question is, does anyone know what the CFM numbers are for a Thunderheader? I'm just curious, I'm sure my bike will run better with the SuperTrapp as it most likely will produce more back pressure.


  2. #2
    bschultz Guest


    You may want to ask the folks at Thunderheader.

  3. #3
    trongoire1 Guest


    Ok thanks.

    With my above setup, is 16-18 disks with a closed end cap correct?

  4. #4
    bschultz Guest


    Yes, our testing and customer feedback indicates 16-18 discs should provide you with the best usable power.

  5. #5
    trongoire1 Guest


    Ok great, thanks for the info.

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