103 question

Discussion in 'Dyna Models' started by marknett, Nov 8, 2012.

  1. marknett

    marknett Active Member

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    with the new 103 (1690) motors , What hp and torque should I be around wirh stage 1 upgrade and slip-on vance and hines pipe .. This is with the dealer download which most on here are not impressed with. Just a general idea please
     
  2. Breeze3at

    Breeze3at Well-Known Member

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    Mark; Some 103" Dyno runs I've read show 63 hp / 80 tq. bone stock
    78 hp / 92 tq stage 1 , and 90 hp / 100 tq. with cams. Keep in mind, there's a LOT of possible variances on dyno numbers.
     
  3. marknett

    marknett Active Member

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    Thanks for the reply ... I would have thought a little higher Since they advertise 100 torque on the web specs. But your right , there are a lot of ways to change the numbers lol :)
     
  4. Breeze3at

    Breeze3at Well-Known Member

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    Manufacturers almost always report hp and tq numbers as measured at the crankshaft. Most things I've read/heard through the years say 10 -15 % less at the rear wheel. Plus, the mfgs. usually select a hand built, tuned to the teeth, controlled atmospere, etc.etc. for the numbers. Sorta like the MPG numbers they use. :p
     
  5. Rubyred

    Rubyred Senior Member

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    Catalytic Converters don't help any either.
     
  6. marknett

    marknett Active Member

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    won't i be removing the catalytic converter with the vance and hines slip-on ?
     
  7. Jack Klarich

    Jack Klarich Expert Member

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    Check out where the pipes meet, I believe the cat is there on the Switchback
     
  8. Breeze3at

    Breeze3at Well-Known Member

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    Last edited: Nov 8, 2012
  9. hogrotten

    hogrotten Junior Member

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    If you have the race tuner you can richen that stage1 up a bit, all the factory download does is return the AFR to what it was with the stock A/C on it that's why most are not happy with it. :s
     
  10. DynaBob09

    DynaBob09 Active Member

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    Your bike probably has a nasty catalyic in the colector like the 2010 FatBob's and up. Saw a picture of one that was cut out. Amazing any air can get through it...