Results 1 to 3 of 3
  1. #1
    rick xp's Avatar
    Join Date
    Jul 2007
    Location
    Brisbane, Australia
    Posts
    1,013
    +1
    7

    I have lost my RPM

    I just purchased a new vessel this weekend i have had some trouble with my ski and for the life of me i cant work it out.

    Heres my specs:

    2004 RXP
    Piranaha Intercooler
    Some kind of wheel. I think its a early vortech.
    Exhaust
    Mod waterbox
    Stock ecu
    Solas 14/19 4 blade untouched
    Riva Rear Intake

    Im getting a solid 7 psi of boost.

    Im currently running 70.3 MPH @ 7850. I cant seem to find where the rest of the rpm has gone. Oil level is fine. Prop is fine.

    Anybody got any ideas?

    Does a 14/19 out of the box turn 8100?


  2. #2

  3. #3
    rick xp's Avatar
    Join Date
    Jul 2007
    Location
    Brisbane, Australia
    Posts
    1,013
    +1
    7
    yeah mate checked all that.

    I have just thought that im running a riva rear intake but havent drilled any holes in the grab handle. Will try and run it with the seat of tomorrow and see if i gain any rpm.


    The one thing i dont get is if i put a riva ECU in it the rpms go up to 8300 and boost goes to 7.6 PSI.

    Thats a 400 RPM gain just by plugging it in??

Thread Information

Users Browsing this Thread

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

Similar Threads

  1. Replies: 2
    Last Post: 01-13-2016, 01:34 PM
  2. Where have my rpms gone?
    By miker1 in forum Yamaha PWC Performance (4-stroke)
    Replies: 12
    Last Post: 12-01-2010, 02:14 AM
  3. How many have lost engines due to the higher RPM limit in the reflashes or ecus?
    By 556SBR in forum Yamaha PWC Performance (4-stroke)
    Replies: 15
    Last Post: 10-25-2010, 03:19 PM
  4. Why yes, as a matter of fact I have lost my mind...
    By Sugaree in forum Yamaha Projects & Build Threads
    Replies: 3
    Last Post: 09-10-2010, 08:29 PM
  5. lost my clutch today
    By Green Hulk in forum 4-Tec Performance
    Replies: 30
    Last Post: 06-14-2005, 07:30 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
  •