DR200SE OEM muffler mod

Discussion in 'Thumpers' started by davisdrafting, Jan 2, 2013.

  1. davisdrafting

    davisdrafting Adventurer

    Joined:
    May 9, 2009
    Oddometer:
    10
    Location:
    NorCAL
    I did a few mod's today

    1. removed airbox lid
    2. Modafied the OEM muffler
    3. drilled air screw plug on carb
    4. Removed evap system.

    I didn’t have jets to do the job right, just messed with the air screw, the thing was turned all the way in LEAN! it's probably about 3 turns or more out now (temporary fix until I re jet) I have got to say it feels like I doubled the horsepower doing the above, major improvement on 1/8 throttle or less.

    If anybody knows what the aftermarket needle # is I'd appreciate it.



    Chopping in band saw, in-between the spot welds and end. Remove the 4 spot welds on the end cap, you will need to reuse it.

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    I had a SS handy cap rail in the scrap box the same diameter

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    The flange happened to be the correct size as well, (guess I used up all my luck for the day)

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    Before and after

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    The end (pun intended)

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    #1