Page 1 of 3 1 2 3 LastLast
Results 1 to 10 of 28
  1. #1
    JFizzleJR's Avatar
    Join Date
    Aug 2005
    Location
    FL
    Posts
    8,628
    +1
    807

    Cheapest way to run rude/b-kit with stock ecu

    What's the cheapest way? is 50# injectors + a fuel pressure regulator possible? or is the rude fuel controller necessary?


  2. #2
    Site Admin Green Hulk's Avatar
    Join Date
    Apr 2005
    Location
    Morgan City, LA
    Posts
    36,398
    +1
    2,524
    You can't just put 50# injectors on without a fuel controller as it would be way rich thru the bottom end and midrange.

    I suspect that all you would have to do is install the rising rate fuel pressure regulator and even run it with the stock injectors. You would have to measure the AFR to confirm this though.

  3. #3
    Site Admin Green Hulk's Avatar
    Join Date
    Apr 2005
    Location
    Morgan City, LA
    Posts
    36,398
    +1
    2,524
    .... you know, an old phone conversation i had with Les about 2 years ago comes to mind. If i remember correctly he said all that was needed to run his B kit was his rising rate reg. and stock injectors.

    I still advise anyone that tries this to measure the AFR.

  4. #4
    JFizzleJR's Avatar
    Join Date
    Aug 2005
    Location
    FL
    Posts
    8,628
    +1
    807
    I knew that just 50#'ers isn't enough, but wasn't sure if the rude controller is the only option.
    Do you have a link or contact to someone who lends or sells a A/F setup?

  5. #5

  6. #6
    MIARider's Avatar
    Join Date
    Aug 2007
    Location
    S. Florida
    Posts
    1,430
    wouldnt the rude controller be able to tune the a/f ratio better than the rising fpr would ?

  7. #7
    ROTAX RACING performance
    Join Date
    Apr 2005
    Location
    sweden
    Posts
    1,462
    +1
    17
    you can run the rising rate fuel regulator with stock injectors ( 38 lb) and Ruds/ B-Kit. 100% you need nothing else

    the most important thing is to set the static fuel pressure befor you start your engine.

    best to install a 2 nd fuel gauge to check the reading on the static fuel pressure ( fuel pump is on engine is Off )

    the orginal fuel gauge that comes with the regulator is sometimes a bit Off

    you can also run the B-Kit on a complete stock setup if you still running the stock air intake, ( you dont need a fuel pressure regulator )

    but if you want to get the full potential, you go with a 4 inch or rear air Intake setup and the fuel pressure regulator.


    that combination is testet world wide at least on 50 setups so we dont need to start a discussion about lean or rich at this point.

    but like Jerry says, you should allways try to check the A/F on your setup and the riding condition you are running.

    the stock ECU will rich up the A/F so it helps allmost in every condition

  8. #8
    JFizzleJR's Avatar
    Join Date
    Aug 2005
    Location
    FL
    Posts
    8,628
    +1
    807
    The mods I have that affect A/F are an external intercooler and riva rear air intake so I would definitely need the fuel pressure reg.

    Is the regulator in the online store the one thing I need?

    What gauge do you recommend since the original one seems to be off?

    What pressure should the regulator be set at for the B-kit, stock 38s, rear air and external IC?

    Who welds or knows someone who welds the bung into the j-pipe for the A/F readings?


    Thanks for sharing Malte and thanks Jerry for the info as well!

  9. #9
    Site Admin Green Hulk's Avatar
    Join Date
    Apr 2005
    Location
    Morgan City, LA
    Posts
    36,398
    +1
    2,524
    Fizzle, all you need is the rising rate fuel pressure regulator.

    You always set the regulator at 60 PSI with the lanyard first plugged in (the fuel pump runs for 2 seconds)

    The stock gauge on the regulator is fine.

    Nils can weld the bung in the J pipe.

  10. #10
    Site Admin Green Hulk's Avatar
    Join Date
    Apr 2005
    Location
    Morgan City, LA
    Posts
    36,398
    +1
    2,524
    Quote Originally Posted by MIARider View Post
    wouldnt the rude controller be able to tune the a/f ratio better than the rising fpr would ?
    Not necessarily better. They both do the same thing, only differently. The rude does it electronically. The regulator with increased fuel pressure. The regulator is much more user friendly. The electronic controller has to be sent to Bttek for programming changes.

Page 1 of 3 1 2 3 LastLast

Thread Information

Users Browsing this Thread

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

Similar Threads

  1. best way to run in stx 15f engine
    By trevs in forum Kawasaki PWC Performance (4-stroke)
    Replies: 4
    Last Post: 02-04-2010, 04:13 AM
  2. c kit with stock ecu?? what injectors are people running?
    By Turbo Retro in forum 4-Tec Performance
    Replies: 6
    Last Post: 01-06-2010, 05:55 PM
  3. Which way to run my Timber Deck
    By SURFnTURF in forum Open Discussion
    Replies: 12
    Last Post: 07-26-2009, 01:49 PM
  4. those who run rude s/c and stock ecu
    By vduzin12 in forum 4-Tec Performance
    Replies: 44
    Last Post: 08-03-2008, 11:55 AM
  5. Cheapest Way To Make Your Ski Faster!!!!!
    By Pinoy in forum Sea Doo Open Discussion
    Replies: 14
    Last Post: 03-21-2008, 04:16 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
  •