Results 1 to 9 of 9
  1. #1
    gordon lasiter #328's Avatar
    Join Date
    Aug 2008
    Location
    katy, texas , United States
    Posts
    1,647
    +1
    28

    fuel pressure with the r2 reprogramming?

    what fuel pressure should your fpr be set at with the r2 reprogramming?
    the instructions for the reprogramming only reccomend 91 to 93 octane.
    i have not read anything about fuel pressure setting.
    maybe most people do not use a fpr with this setup!


  2. #2
    FZS-T
    Join Date
    May 2007
    Location
    South..South...Florida
    Posts
    757
    I have my RRFPR set at 55 PSI with 550cc injectors!.

  3. #3
    MPower's Avatar
    Join Date
    May 2005
    Location
    Raleigh, NC
    Posts
    3,340
    +1
    121
    is this the riva unit?

  4. #4
    gordon lasiter #328's Avatar
    Join Date
    Aug 2008
    Location
    katy, texas , United States
    Posts
    1,647
    +1
    28
    Quote Originally Posted by MPower View Post
    is this the riva unit?
    yes. i have the riva RRFPR! But, the rising rate will not be used at this time. with the oem injectors. which is what is reccomended with the r2 reprogramming.
    going to re-check the AFR this weekend. i had the rising rate connected before. but, i am thinking it was to much fuel pressure with the oem injectors.
    so i was thinking 48 to 52 lbs on the fuel pressure gauge.
    maybe a better question is " what is the fuel pressure of the oem fuel pump? "

  5. #5
    mjh3ides's Avatar
    Join Date
    Jul 2007
    Location
    Jupiter, Florida
    Posts
    6,805
    +1
    2,024
    Quote Originally Posted by gordon lasiter #328 View Post
    yes. i have the riva RRFPR! But, the rising rate will not be used at this time. with the oem injectors. which is what is reccomended with the r2 reprogramming.
    going to re-check the AFR this weekend. i had the rising rate connected before. but, i am thinking it was to much fuel pressure with the oem injectors.
    so i was thinking 48 to 52 lbs on the fuel pressure gauge.
    maybe a better question is " what is the fuel pressure of the oem fuel pump? "
    Jim told me the stock pressure is 49-52. I think Jerry posted it somewhere too, but don't remember where.

  6. #6
    gordon lasiter #328's Avatar
    Join Date
    Aug 2008
    Location
    katy, texas , United States
    Posts
    1,647
    +1
    28
    Quote Originally Posted by mjh3ides View Post
    Jim told me the stock pressure is 49-52. I think Jerry posted it somewhere too, but don't remember where.
    ok. thanks.
    so i will probably set the fpr @50 lbs and see how the afr is on it.

  7. #7
    Addicted Member 5001craig's Avatar
    Join Date
    Jul 2007
    Location
    Northeast Indiana
    Posts
    2,924
    +1
    11
    My AFR's were 12.6-12.7 at idle with my Riva FPR UNTOUCHED from Riva.

    I've been told to start at 52 PSI and go from there.

    My thinking is to set it off the AFR's... Does this sound right?

  8. #8
    gmoeller's Avatar
    Join Date
    Nov 2007
    Location
    Hermosa Beach, Calif
    Posts
    1,450
    +1
    9
    Will the pressure at the FPR be the same as the pressure at the "rail" (I think that's what its called)?
    I have the R&D inline pressure gauge and it reads 54..... ???
    And it sounds quite rich at idle.
    .....AFR gauge set up to go in this week, finally!

  9. #9
    SHOBiz's Avatar
    Join Date
    Jul 2008
    Location
    Wylie, Texas
    Posts
    3,577
    AFR or lambda is going to vary from ski to ski as the fuel pressure will as well.
    Best thing to do it log the AFR or lambda through the entire rpm range and adjust the fuel pressure as required.

Thread Information

Users Browsing this Thread

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

Similar Threads

  1. where to set fuel pressure with r3 reflash & stock wheel
    By wave15stx in forum Yamaha PWC Performance (4-stroke)
    Replies: 23
    Last Post: 05-01-2013, 01:55 PM
  2. pressure with the r&d s/c Pulley Wheel???
    By Amvegeta in forum Kawasaki PWC Performance (4-stroke)
    Replies: 7
    Last Post: 06-15-2011, 08:11 AM
  3. Fuel mileage with the FZS...
    By OutlawGPR in forum Yamaha PWC Performance (4-stroke)
    Replies: 6
    Last Post: 06-26-2010, 08:36 PM
  4. who is running a riva b1 wheel with the ecu reprogramming?
    By gordon lasiter #328 in forum Yamaha PWC Performance (4-stroke)
    Replies: 4
    Last Post: 04-02-2010, 06:11 PM
  5. Fuel pressure with X charger?
    By Chris0060 in forum 4-Tec Performance
    Replies: 54
    Last Post: 04-29-2009, 04:35 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
  •