Results 1 to 6 of 6

Thread: AFR ? ???????

  1. #1
    rxpredviper's Avatar
    Join Date
    Feb 2009
    Location
    WPB
    Posts
    2,248
    +1
    62

    AFR ? ???????

    I like to know if this number on AFR are fine 11.9 and 12.2 @8100 rpm?


  2. #2

    yes

    you might shoot for a touch lower but you should be fine with those numbers.

  3. #3
    R88ory RXP's Avatar
    Join Date
    Feb 2008
    Location
    Kent, England
    Posts
    2,737
    +1
    46
    I would say that you are just fine. Having read a few bits of info away from this forum around 12.5 is safe but it may not be the best for the most power. Testing has shown on these skis that 11.7-9 is best for power. R88

  4. #4
    Site Admin Green Hulk's Avatar
    Join Date
    Apr 2005
    Location
    Morgan City, LA
    Posts
    36,398
    +1
    2,524
    11.9 is ideal.

    12.2 is livable if under 14 psi boost. Over 14 psi i recommend you get the AFR down to the 11.7 to 11.9 range at wide open throttle.

  5. #5
    canadian iceman
    Join Date
    Dec 2007
    Location
    medicine hat, alberta, canada
    Posts
    627
    +1
    22
    once you have set your afr to those numbers..how much would or could they (afr)...change from say a 10 degree dif in temp from one day to the other...just a guess??

  6. #6
    rxpredviper's Avatar
    Join Date
    Feb 2009
    Location
    WPB
    Posts
    2,248
    +1
    62
    Quote Originally Posted by DIGGS View Post
    you might shoot for a touch lower but you should be fine with those numbers.
    ok thanks but the problem is this @1890 rpm is @ AFR is 11.7 I think thas to rich do you think? is any way to fix that? the good part is that I run today 78.8 with RR SC with 12 pound of boost @ 8120 rpm . is 12pound because i port the SC . Do you guy think that if i put the openloop and jimplate i will get to 80mph with stock computer?

Thread Information

Users Browsing this Thread

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

Similar Threads

  1. AFR guages
    By skoepp in forum 4-Tec Performance
    Replies: 13
    Last Post: 03-13-2008, 01:47 PM
  2. AFR numbers
    By miamirider in forum 4-Tec Performance
    Replies: 5
    Last Post: 03-12-2008, 10:42 AM
  3. stock Ultra AFR
    By Whooper in forum Kawasaki PWC Performance (4-stroke)
    Replies: 25
    Last Post: 02-02-2008, 04:04 AM
  4. Who do you recommend to weld bung for AFR ?
    By DaveC in forum Sea Doo Open Discussion
    Replies: 10
    Last Post: 12-06-2007, 02:44 AM
  5. stock afr??
    By codymouse54321 in forum 4-Tec Performance
    Replies: 8
    Last Post: 11-08-2007, 08:48 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
  •