Results 1 to 9 of 9
  1. #1
    Tube Master's Avatar
    Join Date
    Apr 2005
    Location
    Maple Grove MN
    Posts
    235

    15F, FI Injectors

    OK so I have RIVAS RPM kit on both of my 06 15F's. Plus other holes in boat to get more fresh air in and hot air out. That means the engine is getting MORE air. So any way I would think more fuel would make more HP. Maybe bigger Injectors would do the trick? I think of this because I own two 07 FI 700 grizzly's. You can go into the digital dash and take a factory setting of 0 and go to 120, 100 is far enough. By doing this it dumps more fuel in engine and you gain 6mph. So I think if we can get more fuel into the 1500 we can go faster!
    Attached Thumbnails Attached Thumbnails Click image for larger version. 

Name:	P1000132.JPG 
Views:	85 
Size:	3.17 MB 
ID:	22790   Click image for larger version. 

Name:	P1000133.JPG 
Views:	74 
Size:	3.19 MB 
ID:	22791   Click image for larger version. 

Name:	P1000138.JPG 
Views:	78 
Size:	3.30 MB 
ID:	22792   Click image for larger version. 

Name:	P1000143.JPG 
Views:	82 
Size:	3.34 MB 
ID:	22793  
    Last edited by Tube Master; 04-27-2007 at 03:50 AM.


  2. #2
    Tube Master's Avatar
    Join Date
    Apr 2005
    Location
    Maple Grove MN
    Posts
    235
    NOT TO MANY THINKERS OUT THERE

  3. #3
    Tube Master's Avatar
    Join Date
    Apr 2005
    Location
    Maple Grove MN
    Posts
    235
    Can we buy bigger Injectors for the 15F or not

  4. #4
    AaronC's Avatar
    Join Date
    Aug 2006
    Location
    Sacramento, CA
    Posts
    457
    +1
    4
    There's several ways to deliver more fuel. An adjustable ECU can control pulse width of the injectors, raise fuel pressure, or keep the same fuel pressure and run bigger injectors. Adjusting the ECU would be most effective throughout the RPM range. There's no way to tell if the 15f needs more fuel without getting A/F ratio readings and experimenting to see if it picks up or not. My buddy is a dynotuner, I'll ask him if he might be able to hook up a wideband to the ski and see what his input is. He keeps wanting me to do some head work, cams, port the exhaust manifold/extrude hone etc. But I need to find something to tune with, otherwise the other stuff won't show it's teeth.

  5. #5
    Sammy-swed's Avatar
    Join Date
    Nov 2005
    Location
    Sweden
    Posts
    38
    I tried the Riva offshore ECU on my stock 15F (before the timing advance) and it didn`t make any difference at all.

  6. #6
    ROTAX RACING performance
    Join Date
    Apr 2005
    Location
    sweden
    Posts
    1,462
    +1
    17
    you can run a fuel pressure regulator , as used on the SC Kit

  7. #7
    Tube Master's Avatar
    Join Date
    Apr 2005
    Location
    Maple Grove MN
    Posts
    235
    Quote Originally Posted by mrracing View Post
    you can run a fuel pressure regulator , as used on the SC Kit
    What will that do for us? Where can we get one?

  8. #8
    AaronC's Avatar
    Join Date
    Aug 2006
    Location
    Sacramento, CA
    Posts
    457
    +1
    4
    Quote Originally Posted by Tube Master View Post
    What will that do for us? Where can we get one?
    It only matters if it's adjustable. Allowing you to raise or lower the pressure. More pressure, more fuel.

  9. #9
    Tube Master's Avatar
    Join Date
    Apr 2005
    Location
    Maple Grove MN
    Posts
    235
    I had adjustable fuel regulator on my 2 Honda f12x's.

Thread Information

Users Browsing this Thread

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

Similar Threads

  1. 2009 stx 15f FI help needed
    By funboy30189 in forum Kawasaki How To & FAQs
    Replies: 4
    Last Post: 05-23-2016, 11:10 PM
  2. 2009 stx 15f FI help needed
    By funboy30189 in forum Kawasaki PWC Performance (4-stroke)
    Replies: 4
    Last Post: 05-23-2016, 11:10 PM
  3. 2013 Stx-15f fi warning
    By wheelers4life in forum Kawasaki PWC Performance (4-stroke)
    Replies: 11
    Last Post: 07-31-2013, 12:36 PM
  4. STX-15F - Fuel injectors only work when removed.
    By FLSUN in forum Kawasaki PWC Performance (4-stroke)
    Replies: 5
    Last Post: 04-13-2011, 06:39 PM
  5. Injector Issues on a 15F
    By Good2Go16 in forum Kawasaki PWC Performance (4-stroke)
    Replies: 3
    Last Post: 04-22-2009, 05:47 PM

Posting Permissions

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