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Bike speed topped out at 75-80 mph. HElP

Discussion in 'CVP Stage 1 Tuners Kit' started by redrott, May 16, 2010.

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  1. redrott

    redrott New Member

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    I put on a Arlenn Ness big sucker and the cv performance stage 1 tuners kit with the ez just. Drove to the beach this weekend and on the way we were going through a 70 MPH speed limit zone. Well I got behind the other bike and car we were travelling with and tried to speed up to catch up and it wouldn't pull anymore past about 75 or so. Is this the top speed I figured the bike would pull past that. If not what is the problem. Is one of the jets too large? I used the 48 pilot jet and 185 main jet per the instructions Since I have a set of vance and hines long shots and the ness air filter kit.

    The bike seems to run fine otherwise I just thought it would pull higher than that?
    redrott, May 16, 2010
    #1
  3. chucktx

    chucktx Moderator Staff Member

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    what kind of bike are you riding??? how many passengers....any head wind????? need some details.......
    chucktx, May 16, 2010
    #2
  4. redrott

    redrott New Member

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    a 1999 fatboy no passengers. Yes there was some wind but not that much. It is a 1340 evo with 5 speed trans.
    redrott, May 16, 2010
    #3
  5. FLHTbiker

    FLHTbiker Moderator Staff Member

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    Should run up way faster than that, you got something going on there. What's it doing at 75, just no power?
    Last edited: May 16, 2010
    FLHTbiker, May 16, 2010
    #4
  6. chucktx

    chucktx Moderator Staff Member

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    what work has been done to the bike recently?
    chucktx, May 16, 2010
    #5
  7. kenfuzed

    kenfuzed Administrator Staff Member

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    Need more info such as exhaust type, how was the bike running before the work. The evo 1340 kit doesn't come with a 48 pilot jet so please recheck what jets were installed.
    kenfuzed, May 16, 2010
    #6
  8. hotroadking

    hotroadking Super Moderator Staff Member

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    My guess is you have too much fuel
    I've had it happen with longshots on my 00 Heritage,
    the fuel it took to run the bike on a thunderheader
    was way too much for the long shots, bike would bog
    ie not accelerate

    Reduce the 48 to a 45
    don't mess with the main yet
    set the idle screw properly and go for a ride...
    hotroadking, May 17, 2010
    #7
  9. redrott

    redrott New Member

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    Well it was the biggest size pilot jet that came in the kit not sure what the number was now. I seem to have lost the instructions. The exhaust is vance and hines long shots. seems to be a pretty open exhaust. Yes at 75 it just wouldn't accelerate any more. Bike ran fine before but I never had it that fast before I did the work either.

    I haven't had any other drive ability issues since the kit install Bike seemed snappier off the throttle. There hasn't been any other work done to the bike Chuck.
    redrott, May 17, 2010
    #8
  10. hotroadking

    hotroadking Super Moderator Staff Member

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    Guarantee you are getting WAY too much fuel
    back the pilot jet back down, those pipes hate
    too much fuel, they don't pull the exhaust pulse
    out that efficient (doesn't matter the they are "open" it's flow characteristics)

    IT wasn't doing that before right?

    So back down the pilot jet, and the 185 main
    probably isn't a big problem but it too is
    JMO too large.
    hotroadking, May 17, 2010
    #9
  11. kenfuzed

    kenfuzed Administrator Staff Member

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    You probably have the #46 pilot jet. I suggest starting from the lower recommendations for your bike of a 45 pilot and 180 main jet. Adjust your mixture screw and then test from there.

    If you are running without baffles much of the problem would be with the exhaust rather than the carburetor jetting.
    kenfuzed, May 17, 2010
    #10
  12. hotroadking

    hotroadking Super Moderator Staff Member

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    Yep that's a good point lots of people pull the baffles
    and they are friggin loud...

    Baffles in, less fuel.. More Fun..
    hotroadking, May 17, 2010
    #11
  13. hotroadking

    hotroadking Super Moderator Staff Member

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    Dreaded double post
    hotroadking, May 17, 2010
    #12
  14. redrott

    redrott New Member

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    So the jetting being too rich could cause this problem? I am not sure if the pipes have baffles or not. They aren't drag pipes for sure.
    redrott, May 17, 2010
    #13
  15. hotroadking

    hotroadking Super Moderator Staff Member

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    Yes I had the same problem with those pipes on my 00 Heritage
    the thunderheader liked a lot more fuel, figured I'd change the pipes
    back to the Long shots one night, bored,

    next day couldn't get the darn bike over 70MPH it would just
    bog down, I did get through it one time and it took off but
    for the most part you couldn't get by the bog.

    Lowered the pilot jet size one and off it went.

    You can tell if baffles are in, on the back of the pipes there
    are two small holes, one holds the screw for the end cap if you
    have one, the other for the baffle, should be an allen head
    screw in there if you have baffles, otherwise they'd
    shoot out the back.
    hotroadking, May 17, 2010
    #14
  16. redrott

    redrott New Member

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    So should I have the 46 pilot and 185 main. Should I leave the 185 main and just drop the pilot to 45 or drop both down a size.
    redrott, May 17, 2010
    #15
  17. redrott

    redrott New Member

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    Hot road king. Did your bike run fine other than bogging down at 70. mine doesn't seem to bog down at 70 just doesn't pull anymore seems to be flat.
    redrott, May 17, 2010
    #16
  18. hotroadking

    hotroadking Super Moderator Staff Member

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    same thing it's bogging because you can't power past it, RPM's don't gain Right?

    You can hold the throttle all the way open and it just won't go any faster?

    I would just drop the pilot, the main is easy to do
    it could also be the needle, but one thing at a time.
    hotroadking, May 17, 2010
    #17
  19. redrott

    redrott New Member

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    alright I guess I'll pull the carb again and drop the pilot. anybody know the easy way to get the carb cables re attached afterwards. I put as much slack as I could in the adjusters the first time and still struggled like crazy trying to reattach them.
    redrott, May 17, 2010
    #18
  20. redrott

    redrott New Member

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    Can I rejet the pilot and main with the carb on the bike?
    redrott, May 17, 2010
    #19
  21. FLHTbiker

    FLHTbiker Moderator Staff Member

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    I installed a new carb (Edelbrock) and manifold on my 80 EL Camino and it would crap out when I stepped on it so I reduced the main jet size down and took care of the problem.
    FLHTbiker, May 17, 2010
    #20
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