Results 1 to 11 of 11
  1. #1
    Member
    Join Date
    Oct 2004
    Location
    Lake Charles, Louisiana
    Posts
    3,416

    Ox66 question 200 to a 225 or 250hp

    What is all involved on making a stock 2001 vmax ox66 200hp to make it a 225 or 250hp?

  2. Member
    Join Date
    Sep 2011
    Location
    Snow Hill, NC
    Posts
    574
    #2
    PM sent
    -Lance
    Bullet 21XD Mercury 250 Pro XS


  3. Member
    Join Date
    Sep 2016
    Location
    Mineola, TX
    Posts
    69
    #3
    NCDURAMAX05 can you send me the information too please?

  4. SEE YA!!!!!!!! DLAB's Avatar
    Join Date
    Jan 2010
    Location
    Pineville, Louisiana
    Posts
    9,963
    #4
    I have a couple 225 Ecus that will plug and play with the 200......porting is different on the 250, so you are kinda limited there. Shoot me a PM if interested

    also have a spare LW flywheel, and big bore throttle body with spacer

  5. Member
    Join Date
    Oct 2008
    Location
    Miami, Florida
    Posts
    216
    #5
    Possible to post info so we can see what is involved. I'm interested in converting my 03 vmax200

  6. aka Strokedyamaha StrokerSmoker's Avatar
    Join Date
    Oct 2014
    Location
    Kansas
    Posts
    2,045
    #6
    Quote Originally Posted by maineidyl View Post
    Possible to post info so we can see what is involved. I'm interested in converting my 03 vmax200

    you can pretty much make a 066 any hp you want up to about 360....its best to call hydro tec and discuss exactly what you want and how much hp you want and they can put together a plan.....value wise the heads are the biggest gain dollar for dollar

    Hi performance parts or a Yamaha power head visit
    Hydro-Tec's web site @ http://www.yamaha-rebuild.com/
    Paul Hottman Hydro-Tec's Pro staff since 1998

  7. Member
    Join Date
    Aug 2022
    Location
    Sevierville, Tennessee
    Posts
    7
    #7
    Quote Originally Posted by DLAB View Post
    I have a couple 225 Ecus that will plug and play with the 200......porting is different on the 250, so you are kinda limited there. Shoot me a PM if interested

    also have a spare LW flywheel, and big bore throttle body with spacer
    Do you have any more 225 ecu? Pm me

  8. Member
    Join Date
    Mar 2017
    Location
    Georgetown, TX
    Posts
    767
    #8
    Quote Originally Posted by Deven View Post
    Do you have any more 225 ecu? Pm me
    I do
    Lake&Bay Boca
    SHO

  9. Member
    Join Date
    Aug 2022
    Location
    Sevierville, Tennessee
    Posts
    7
    #9

    Clark bird 225ecu

    Text me info 865-696-5134
    Quote Originally Posted by ClarkBird View Post
    I do

  10. Member
    Join Date
    Aug 2022
    Location
    Sevierville, Tennessee
    Posts
    7
    #10
    Pm me info. I’m looking to make my 3.1L 200 ox66 a 225

  11. Member
    Join Date
    Aug 2022
    Location
    Sevierville, Tennessee
    Posts
    7
    #11
    Text me if you still have that ecu Clark bird. 865-696-2122