Results 1 to 5 of 5
  1. #1
    Self Confessed Day Dreamer toomanytoys's Avatar
    Join Date
    Sep 2008
    Location
    Sydney, Australia
    Posts
    1,932
    +1
    151

    Weird Boost Behaviour

    I noticed my maximum boost was just under the 15 mark on the gauge. It's normally 1-2 bars over this level. It had been sitting on the "lower" level all day.

    At the end of the day, on the way back to the ramp, I hold the throttle pinned, after about one minute of WOT a bar turns on and I'm at the 15 mark. Another minute I get one bar over the 15 mark. Another minute or two goes by and another bar turns on. That's weird. So I slow down and pin it again, this time after only a few seconds the gauge goes right up to the normal level of 2 bars above the 15 mark. I do this a few more times and everything is good (normal). What the?

    I can only think if a couple of things that might cause this. Excess oil in the Intercooler or hot air in the hull? I'm thinking more likely hot air in the hull and the full throttle run got the air moving??

    What are everyone's thoughts on this.

    Cheers, Mal.


  2. #2
    nicjak's Avatar
    Join Date
    Mar 2008
    Location
    Warragul, Downunder
    Posts
    7,794
    +1
    625
    could be oil fouling the sensor, we all know they do push a little through the i/c, stand the trailer up in the front for 30min and check how much oil fills the clear check tube on the bottom of the airbox this will give a good indication of the amount of oil going through the intake. also check the bolts on the s/c outlet the one facing the motor as mine had a loose bolt and pushed the gasket out rear bottom corner behind cylinder oil drain back tube. also noticed on mine the s/c had alot of stress placed on the outer casing due to it fouling on the engine mount (i posted about this elswhere pointing to the unused s/c casing lug that i had to cut off to clear the mount) all else fails could simply be heat related from memory i dont think you have opened your hull up have you?

  3. #3
    Self Confessed Day Dreamer toomanytoys's Avatar
    Join Date
    Sep 2008
    Location
    Sydney, Australia
    Posts
    1,932
    +1
    151
    No. Yeah all stock (apart from the delimiter)

    Will check the other stuff tomorrow.

    Cheers.

  4. #4
    Banned User
    Join Date
    Jan 2009
    Location
    LA/oc
    Posts
    3,911
    +1
    129
    It's just the sensor if your not going faster or making more rpm as the boost goes up then it's just a whacked out sensors. The boost gauge is as reliable as the speedo

  5. #5
    nicjak's Avatar
    Join Date
    Mar 2008
    Location
    Warragul, Downunder
    Posts
    7,794
    +1
    625
    i reckon you are right

Thread Information

Users Browsing this Thread

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

Similar Threads

  1. Kawasaki Ultra 150 Weird Electrics Behaviour
    By ULTRA3N in forum Kawasaki PWC Performance (2-stroke)
    Replies: 12
    Last Post: 03-20-2013, 07:39 PM
  2. Octane Boost???
    By RM_RXP in forum 4-Tec Performance
    Replies: 20
    Last Post: 05-27-2007, 08:08 AM
  3. Boost gauge, Gps, Depth Gauge ideas
    By Mark S in forum 4-Tec Performance
    Replies: 45
    Last Post: 04-17-2006, 09:59 PM
  4. boost guage
    By INDY27 in forum 4-Tec Performance
    Replies: 29
    Last Post: 10-25-2005, 08:23 AM
  5. Digital Boost guage
    By Sunfunzoom in forum 4-Tec Performance
    Replies: 7
    Last Post: 05-13-2005, 12:51 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
  •