Page 35 of 35 FirstFirst ... 25333435
Results 341 to 347 of 347
  1. #341

    Join Date
    Jul 2017
    Location
    Myrtle Beach
    Posts
    112
    +1
    13
    del

  2. #342

    Join Date
    Jul 2017
    Location
    Myrtle Beach
    Posts
    112
    +1
    13
    I am right at 7800 @ 55.7MPH.

    https://i.imgur.com/FDOtXEo.png

    Quote Originally Posted by STX11 View Post
    What RPM's are stock Ultra LX ski's getting at WOT?
    Most people seem to be getting 52+ mph

    I couldn't get past 47 mph 2 up (tank empty) , total weight 380lbs...... , but would like at least 50 which is what my old stx 1100 used to do 2 up, and it even had a worx scoop slowing it down
    Unfortunately I didnt pay any attention to the RPM, but the max recorded on the dash was 7240
    The pump doesn't look too healthy, thats next on the list.

  3. #343
    Livin on the Edge's Avatar
    Join Date
    Jan 2007
    Location
    Northern Illinois
    Posts
    217
    +1
    7
    Currently am running a 5 degree timing advance and ALWAYS use shell 93 octane fuel. Whatís the greatest timing advance thatís safe ? Is there a how to for cutting the timing wheel. I can find one.

  4. #344
    So been reading up on my new to me 2005 stx12f and ecu and the last two digits are "25" not 32 or 36.
    the whole number is 21175-3725
    So is this the stock ecu?

    thanks

  5. #345

    Join Date
    Jun 2014
    Location
    BY
    Posts
    21

    Smile

    Quote Originally Posted by Gm991 View Post
    So been reading up on my new to me 2005 stx12f and ecu and the last two digits are "25" not 32 or 36.
    the whole number is 21175-3725
    So is this the stock ecu?

    thanks
    21175-3725 ECU is for Kaw stx12f 2003-2004
    For 2005 - 21175-3729

    Do you have any troubles with it? If it works ok - forget this numbers )

  6. #346
    yep. stock. got one on my desk right now.

  7. #347
    Nope, no problems, my machine must be in early 05 then. I only run super unleaded in it anyways. Runs really well, speedo is reading 71mph and gps says 67 mph top speed. How inaccurate are those Speedo‘s typically?

    thanks
    Last edited by Gm991; 08-08-2019 at 04:36 PM. Reason: More


Page 35 of 35 FirstFirst ... 25333435

Thread Information

Users Browsing this Thread

There are currently 1 users browsing this thread. (0 members and 1 guests)

Similar Threads

  1. Ultra LX vs. STX 15
    By altsurfryan in forum Kawasaki PWC Performance (4-stroke)
    Replies: 11
    Last Post: 06-07-2014, 11:01 PM
  2. 2012 Kawasaki Ultra LX Performance.
    By Triapet in forum Kawasaki PWC Performance (4-stroke)
    Replies: 12
    Last Post: 01-19-2014, 10:29 AM
  3. 15-f or ultra lx n/a
    By dewberryone in forum Kawasaki PWC Performance (4-stroke)
    Replies: 25
    Last Post: 06-10-2011, 10:54 PM
  4. Ultra LX Economy, Range, and Performance
    By SkierBob in forum Kawasaki PWC Performance (4-stroke)
    Replies: 45
    Last Post: 01-13-2009, 09:23 AM
  5. 15f & Ultra LX performance chip
    By robk in forum Kawasaki PWC Performance (4-stroke)
    Replies: 12
    Last Post: 07-14-2008, 07:25 AM

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •