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Fuel Mileage

Discussion in 'Motorcycle Tech Talk' started by FLHTbiker, Jan 10, 2011.

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  1. FLHTbiker

    FLHTbiker Moderator Staff Member

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    I got a disk and the adapter that fits to the bik
    FLHTbiker, Jan 11, 2011
    #21
  3. hotroadking

    hotroadking Super Moderator Staff Member

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    OK you need to do some tuning runs, all they did was load a map
    and obviously it is the wrong map, 29-31 is off.

    Go through the manual, I haven't done the new SESPT but I believe it's
    similar to the old SERT, you will need to get the cables, pull the side panel
    hook up the PC to the bike and go through the riding/tuning procedure
    to setup the VE for the cells, don't worry about the target AFR or timing for
    now.

    The VE (Volumetric Efficiency) cells are the key, if they are wrong
    the AFR target will never be hit.
    hotroadking, Jan 11, 2011
    #22
  4. Tommyc

    Tommyc Active Member

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    I am ignorant. Why does a new (tight) motor get bad gas mileage??
    Tommyc, Jan 11, 2011
    #23
  5. cowboy

    cowboy Moderator Staff Member

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    some times there a bit to tight need to brake it in, causees it work a bit harder = more fuel ,but if they just loaded a map & not tune it right then that's his problum
    cowboy, Jan 11, 2011
    #24
  6. Tommyc

    Tommyc Active Member

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    oh I see. That's makes sense. A tighter engine has to work harder to move the pistons with the new tight fitting rings. And because it is breaking in the rings by wearing the parts down to fit together better. A new motor also produces more heat than a broke in motor. I went thru this process when I had my shovelhead rebuilt. The break-in is very important part of a shovelheads life. A lot of diligent care must be taken to do it right. My emchanic is like a doctor. He gave very specific instructions for the first 1000 miles. I felt like I was caring for a new born baby.
    Tommyc, Jan 11, 2011
    #25
  7. sarge7

    sarge7 New Member

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    Sounds like you found a good mech. - hang on to him the're few and far between.
    If ya got that shovel together right it will smoke these newer bikes that are comin out out. :)
    sarge7, Jan 11, 2011
    #26
  8. Tommyc

    Tommyc Active Member

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    He is great and my motor runs great. Chicago Bob is my mechanics name.
    Nice looking bike FLHT, is that a twinkie?
    I was looking at a S&S Dual Cam engine on eBay, 140 hp~! $7,000.
    I wish I had the money and the bike to drop it into.
    That's a lot of HP.
    My 'ole 103 ci shovelhead had 105 HP and I thought that was a lot~!
    140 hp is ridiculous~!
    Tommyc, Jan 11, 2011
    #27
  9. FLHTbiker

    FLHTbiker Moderator Staff Member

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    Not familiar with the term Twinkie :confused:

    The bike is back at the dealer right now and they are also going to look at sensors plus the tunning.
    FLHTbiker, Jan 11, 2011
    #28
  10. Tommyc

    Tommyc Active Member

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    Twinkie = twin cam
    Tommyc, Jan 11, 2011
    #29
  11. FLHTbiker

    FLHTbiker Moderator Staff Member

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    Learn something new every day, that's a new one on me. :)
    FLHTbiker, Jan 11, 2011
    #30
  12. ultra200922

    ultra200922 Active Member

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    The mileage on my 09 Ultra 103 stage II, 255 cams gutted mufflers with big city thunder baffles in the headpipes, SEST tuned on the dyno is usually 39-43 MPG depending on how hard I push it. 3500 miles on this build, I maybe picked up 3-4 MPG after it got broke in.:D
    ultra200922, Jan 11, 2011
    #31
  13. Tommyc

    Tommyc Active Member

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    I don't own a twinkie 'cause I can't work on it myself. I don't feel like paying the dealer hudreds of dollars to work on my bike. I would much rather ride a shovelhead and wrench it myself.
    Your bike is pretty tho.
    Tommyc, Jan 11, 2011
    #32
  14. FLHTbiker

    FLHTbiker Moderator Staff Member

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    Bike is under warranty I'm not paying em sheet.
    FLHTbiker, Jan 11, 2011
    #33
  15. cardboard

    cardboard Well-Known Member

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    One big thing I've seen with the sert.
    Hard to find anybody that really knows how to frigin use it.
    cardboard, Jan 11, 2011
    #34
  16. Tommyc

    Tommyc Active Member

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    Oh good, my bikes are 25 and 30 years old so the warranty expired decades ago. haha
    How long is the warranty on a new bike??
    Tommyc, Jan 11, 2011
    #35
  17. hotroadking

    hotroadking Super Moderator Staff Member

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    If you can wrench an evo or shovel you
    can wrench on a twin cam...

    Other than a locking tool for the cam gears
    it's just wrenches' sockets and allens...

    Very simple engines, probably easier
    than a shovel with the new twin cam
    and new cam plate....

    Get the cables, read the manual
    and get your VE tables done yourself..
    hotroadking, Jan 11, 2011
    #36
  18. FLHTbiker

    FLHTbiker Moderator Staff Member

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    I think I'm going to wind up doing just that!
    FLHTbiker, Jan 11, 2011
    #37
  19. fxdxriderleo

    fxdxriderleo Active Member

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    My bike is just a bike, no fairing, no radio, no cd player, no gps, no blue tooth. Just a set of throwover bags. If i get out and ride it at 55-60 mph for extended rides I get 50-52 mpg. At 70-75 I get 50 mpg.
    On a lazy putt on the back roads I get 45-48.
    My Bike is an 03 FXDX with SE mufflers a home made air cleaner on a Big Sucker back plate and Kenfuzed's carb kit.
    fxdxriderleo, Jan 11, 2011
    #38
  20. FLHTbiker

    FLHTbiker Moderator Staff Member

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    That's why I like my 01 Springer so much, its simple
    FLHTbiker, Jan 11, 2011
    #39
  21. chucktx

    chucktx Moderator Staff Member

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    and cheaper!!!!!!
    chucktx, Jan 11, 2011
    #40
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