Results 1 to 7 of 7
  1. 11-21-2019, 05:33 PM #1
    wterry50
    wterry50 is offline
    Member
    Join Date
    Feb 2014
    Location
    Fortson, Ga
    Posts
    10

    OPTIMAX ECU SWAP

    I have a 90 Optimax is it possible to swap a 115 OptiMax ecu with in place of the 90hp ecu?
    thanks
    Reply With Quote Reply With Quote
  2. wterry50
    wterry50 is offline
    Member
    Join Date
    Feb 2014
    Location
    Fortson, Ga
    Posts
    10
    #2 11-22-2019, 06:29 PM
    I gave it a try and at 3900 rpm it goes into guardian mode and goes no further so far the answer is no
    Reply With Quote Reply With Quote
  3. JOE54
    JOE54 is offline
    Member
    Join Date
    Jun 2013
    Location
    LONGVIEW TEXAS
    Posts
    13,996
    #3 11-24-2019, 08:25 AM
    will it start yes ,will it run correctly no, there are other thing on a 115 that make it stronger than a 90
    .................................................. ...the scariest thing in life is the unknown ...................................
    Reply With Quote Reply With Quote
  4. wterry50
    wterry50 is offline
    Member
    Join Date
    Feb 2014
    Location
    Fortson, Ga
    Posts
    10
    #4 11-24-2019, 06:03 PM
    I agree with what you say but what is different
    Reply With Quote Reply With Quote
  5. SilverFox579
    SilverFox579 is offline
    Member
    Join Date
    May 2011
    Location
    Spangle, WA
    Posts
    6,209
    #5 11-25-2019, 08:20 AM
    Block porting is probably one thing.
    _______

    Phil
    '09 Hewescraft ProV
    '09 150 Optimax

    Reply With Quote Reply With Quote
  6. EuropeanAM
    EuropeanAM is offline
    Mercury 3L/4 Stroke/Verado Moderator EuropeanAM's Avatar
    Join Date
    Apr 2008
    Location
    Greenville, SC (US)
    Posts
    95,137
    #6 11-25-2019, 03:58 PM
    Block, throttle body (and depending on serial number there may be other differences). Also note that it is illegal to do so (and there are potentially significant criminal and civil penalties, some of which are referenced in Service Bulletin 2019-08).


    Dual Mercury Master Technician- for Mercury Outboards, Mercruiser and Mercury Racing at European Marine in Greenville, SC.
    Still consider myself a "Marine Apprentice" after 47 years (learn something new every day).
    Mercury Parts, Mercury Outboards, Smartcraft & Accessories, Injector Service, TDR Reeds- BBC Sponsor
    Reply With Quote Reply With Quote
  7. wterry50
    wterry50 is offline
    Member
    Join Date
    Feb 2014
    Location
    Fortson, Ga
    Posts
    10
    #7 11-26-2019, 08:51 AM
    yeah i though the throttle body was for sure didnt think there was much different with the block and just about anything you do is illegal when looking for hp

    but thanks for sharing your knowledge
    Reply With Quote Reply With Quote
« Previous Thread | Next Thread »