Page 1 of 3 1 2 3 LastLast
Results 1 to 10 of 24
  1. #1
    Gus13letter's Avatar
    Join Date
    Apr 2008
    Location
    Tampa Bay, FL
    Posts
    8,134
    +1
    821

    Anyone test the new VTech tunes yet?

    Wondering if anyone has tested the new VTech tunes yet? If so, did you log the runs, which one, what are your mods, what were your results, and what AFR did you see?
    • Stock file No Speed lim
    • 48 8250 35 34 101
    • 48 8350 35 34 101
    Last edited by Gus13letter; 04-30-2015 at 05:53 PM.


  2. #2
    You will run out of Injector Duty Cycle on a cool day at stock fuel pressures with stock injectors. At higher fuel pressures the pump is on the edge of failure.

    Andy

  3. #3
    hkss's Avatar
    Join Date
    Oct 2014
    Location
    Germany Karlsruhe
    Posts
    615
    +1
    59
    Quote Originally Posted by whittlebeast View Post
    You will run out of Injector Duty Cycle on a cool day at stock fuel pressures with stock injectors. At higher fuel pressures the pump is on the edge of failure.

    Andy
    Your words are point-blank dot. Thanks.

    I am at the same point and consideration like Gus ("the new Gus" )

    So I will put in the VT1100 Injektors but I will stay at the stock fp and fpr.

    This will change your wise advise that you given ahead ?

  4. #4
    oikonomoupetros's Avatar
    Join Date
    Mar 2012
    Location
    Thessaloniki, Greece
    Posts
    398
    +1
    50
    Ok, sounds legit.
    So, which pump would u say is the way to go?
    Thinking of running 8500 36 39 next year. For now i ll stick with 8350 170 35 34 tune,with 1100 injectors...but stock pump (or the one u ll suggest)

  5. #5
    My stock pump and regulator keeps up just fine to 8400 RPM and 180 KPA. I happen to have a digital fuel pressure gauge mounted to one of my mirrors so I can watch it at WOT. About 59 at idle and 56.5 at WOT.

    Andy

  6. #6

    Join Date
    May 2013
    Location
    Grand Lake, OK
    Posts
    78
    +1
    5
    Going out on the water tomorrow after I throw in the VT1100's.

  7. #7
    Make sure you grab a VT1100 base tune before you even start it.

  8. #8
    Live Fast wave15stx's Avatar
    Join Date
    May 2007
    Location
    new jersey
    Posts
    2,214
    +1
    32
    my buddy is running the stock file tune limiter removed running at most 8180 rpms with a 15/20 prop im sure he will chime in speeds are very impressive gus this is the guy i told you about we put a fuel pressure regi on today.the tune your looking at with the 34/35 timing might be alittle differnt i have to double check i believe the one hes running has lower timing

  9. #9
    Live Fast wave15stx's Avatar
    Join Date
    May 2007
    Location
    new jersey
    Posts
    2,214
    +1
    32
    i just realized i read it wrong but yea hes running the stock file limiter removed its 30 degrees of timing over 8000 rpms we did back to back testing with that tune the one you are asking about and the 8375 with 38 degrees timing and his highest speed was done with stock file tune. mods are 15/20 stock airbox with hoses directed into front of box fizzle and fpr

  10. #10
    PWC Addict Magnummmmmmmmmm's Avatar
    Join Date
    Jan 2014
    Location
    SML, VA
    Posts
    337
    +1
    47
    I'm running the stock file with no speed limiter. I don't have any way of logging but it would have to be safe. The only change is no speed limiter. Ski runs ~74 now on a 15/20r. Ski is a rxt x 260.

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. Anyone tested the new skat trak dual impellers
    By C Doo in forum 4-Tec Performance
    Replies: 10
    Last Post: 06-14-2013, 10:15 PM
  2. anyone got the new riva b1 wheel installed yet?
    By wave15stx in forum Yamaha PWC Performance (4-stroke)
    Replies: 0
    Last Post: 08-13-2009, 12:54 PM
  3. aNyone test the green wheel yet?
    By camar0 in forum 4-Tec Performance
    Replies: 1
    Last Post: 07-03-2007, 10:36 AM
  4. Finally got to test the new mods out
    By Yuji in forum Sea Doo Sport Boats
    Replies: 6
    Last Post: 06-15-2006, 09:00 AM
  5. I tested the new Solas 15/20R today
    By Green Hulk in forum 4-Tec Performance
    Replies: 54
    Last Post: 08-19-2005, 09:29 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
  •