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99 FLHT, Exhaust question ?

Discussion in 'Motorcycle Tech Talk' started by dld, Apr 8, 2011.

  1. dld

    dld New Member

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    We just recently purchased this bike and the previous owner removed the cross over pipe and welded the holes closed and said it is now true duals. Does anyone know what he gained (or not) by doing this and should we consider going back stock?:cheers::cheers::cheers::cheers::cheers:
    dld, Apr 8, 2011
    #1
  3. JohnnyBiker

    JohnnyBiker Well-Known Member

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    You are going to get a lot of different opinions on this one. I personally like the true duals better. I like it better because there is less restriction for the exhaust to get out. a lot more free flowing. I hate cross over pipes I always have. Beware for an interesting discussion.:D
    JohnnyBiker, Apr 8, 2011
    #2
  4. dld

    dld New Member

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    Thanks for the reply
    dld, Apr 8, 2011
    #3
  5. fxdxriderleo

    fxdxriderleo Active Member

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    The crossover pipe helps low rpm scavanging. This improves the low rpm cylinder fill. gives more low rpm power.
    fxdxriderleo, Apr 24, 2011
    #4
  6. FLHTbiker

    FLHTbiker Moderator Staff Member

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    That is correct. What he did is just make it into a true dual system and depending on the mufflers you can loose power. They tested bike here at Latus Motors both ways and the cross over system actually gave a bit better horsepower. What kind of mufflers are on it and what type of baffles do they have.
    By the way I see you are from Alvin Tex, we have a regular poster here Cowboy who is also from the same town. :)
    FLHTbiker, Apr 24, 2011
    #5
  7. dld

    dld New Member

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    The exhaust appears to be stock with the crossover removed, why do some other models not have a crossover
    dld, Apr 25, 2011
    #6
  8. Red Rider

    Red Rider Well-Known Member

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    One advantage to not having the crossover pipe is there will be less heat under the seat. Makes a solid difference in low speed situations.
    Red Rider, Apr 25, 2011
    #7
  9. cowboy

    cowboy Moderator Staff Member

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    I run the Y&H true dules on my 03 E glide , I run hollowed out stock mufflers & Big city baffles , Have'nt noticed any lost of power at any range :D & did notice a lot less heat under my right back side & the wife said her right foot is a lot cooler :D & you know if shes happy where happy :cool:
    cowboy, Apr 25, 2011
    #8
  10. FLHTbiker

    FLHTbiker Moderator Staff Member

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    That's why with the new frame they have the cross over go under the bike (less heat on the legs) and why I put the V&H power duals on mine, yep I like em. The left side still goes under the bike but what a difference in heat. :)
    FLHTbiker, Apr 25, 2011
    #9
  11. chucktx

    chucktx Moderator Staff Member

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    in stock configuration, they all have a crossover......some are more difficult to see than others......
    chucktx, Apr 25, 2011
    #10
  12. FLHTbiker

    FLHTbiker Moderator Staff Member

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    Where the cross over meets the main pipe on the right side you can also grind down that metal that protrudes down into the main pipe which also disrupts the flow. It does help in a small HP gain. Top builder here showed me that.
    FLHTbiker, Apr 25, 2011
    #11

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