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Forum: Four Stroke and Direct Injected Two Stroke Engines

Low-emissions outboard engines.

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  1. Sticky Thread Sticky: ECDBA Emission performance stock.....

    Started by E-tec1, 11-09-2008 11:30 AM
    3 Pages •
    1 2 3
    1 Attachment(s)
    • Replies: 37
    • Views: 65,748
    cmn
    06-28-2015, 03:01 PM Go to last post

  1. Converting to trip outboards

    Started by Corysprouts84, 08-13-2019 09:41 AM
    2 Pages •
    1 2
    2 Attachment(s)
    • Replies: 17
    • Views: 4,597
    Dave S
    08-19-2019, 11:30 AM Go to last post

  2. 300xs Fluctuating fuel burn

    Started by CPC, 11-15-2022 08:32 AM
    • Replies: 2
    • Views: 568
    HydroSkreamin
    11-22-2022, 07:53 PM Go to last post

  3. 250 Optimax won't rev past 1900 RPM

    Started by cr250, 05-25-2010 03:44 PM
    • Replies: 3
    • Views: 910
    cr250
    05-25-2010, 05:56 PM Go to last post

  4. 06 225 Optimax, Spools up then drops down on power

    Started by cr250, 06-23-2019 05:47 PM
    • Replies: 11
    • Views: 3,942
    Motv18
    06-27-2019, 04:14 PM Go to last post

  5. 250ho set up

    Started by cracker, 02-14-2013 06:44 AM
    2 Pages •
    1 2
    2 Attachment(s)
    • Replies: 15
    • Views: 2,745
    cracker
    03-19-2013, 12:22 AM Go to last post

  6. Etec Gauges options

    Started by cracker, 01-28-2013 01:06 AM
    • Replies: 6
    • Views: 4,144
    cracker
    03-11-2013, 11:52 PM Go to last post

  7. 2003 250XS re-sleeve questions

    Started by crankbearing, 09-26-2013 07:54 AM
    2 Pages •
    1 2
    3 Attachment(s)
    • Replies: 18
    • Views: 2,500
    BoomerMuskoka
    12-08-2013, 12:27 AM Go to last post

  8. Four stroke performance upgrades?

    Started by cRaZy8., 05-25-2013 10:39 PM
    2 Pages •
    1 2
    • Replies: 29
    • Views: 4,971
    CDave
    10-04-2013, 04:48 AM Go to last post

  9. Mercury 115 Pro XS four stroke

    Started by creeljd, 08-09-2018 12:29 PM
    • Replies: 13
    • Views: 3,366
    V-bottom
    09-20-2018, 08:01 AM Go to last post

  10. Yamaha 250hpdi fuel consumption

    Started by critta, 08-13-2009 02:33 AM
    • Replies: 7
    • Views: 1,637
    critta
    08-14-2009, 08:27 AM Go to last post

  11. 3L mad efi intake

    Started by Csmyj, 12-15-2016 06:16 AM
    • Replies: 5
    • Views: 2,383
    mrcrsr
    01-13-2017, 07:49 AM Go to last post

  12. 175 Pro Xs

    Started by Cyncwby, 06-26-2007 03:58 AM
    2 Pages •
    1 2
    • Replies: 17
    • Views: 3,682
    dspencer
    07-14-2007, 06:46 AM Go to last post

  13. DFI oil useage

    Started by Cyncwby, 12-19-2007 02:43 AM
    • Replies: 2
    • Views: 1,218
    theoldwizard
    01-03-2008, 07:26 PM Go to last post

  14. 175 Pro Xs H.P. ???

    Started by Cyncwby, 01-13-2008 10:11 PM
    • Replies: 0
    • Views: 1,001
    Cyncwby
    01-13-2008, 10:11 PM Go to last post

  15. 300R Fourstroke Oil Capacity

    Started by d2kstang, 05-10-2022 12:31 PM
    • Replies: 4
    • Views: 679
    d2kstang
    05-11-2022, 06:27 AM Go to last post

  16. 300 V-Max/300XS; CE-certification?

    Started by D5GT, 09-20-2006 07:16 AM
    • Replies: 1
    • Views: 1,407
    D5GT
    09-20-2006, 07:32 AM Go to last post

  17. 225 E-Tec's water pressure @ wot

    Started by D5GT, 06-27-2007 04:02 AM
    • Replies: 13
    • Views: 2,196
    D5GT
    07-30-2007, 05:43 PM Go to last post

  18. 225 Optimax VS. 225 ProMax???

    Started by dalin, 05-11-2008 06:10 PM
    • Replies: 1
    • Views: 1,241
    Cyncwby
    05-14-2008, 02:14 AM Go to last post

  19. how much faster would a Promax 225 be vs. a 225 OptiMax???

    Started by dalin, 05-12-2008 05:29 PM
    • Replies: 4
    • Views: 1,394
    Hydropromax
    05-13-2008, 12:53 AM Go to last post

  20. are there model yrs of OptiMaxs' to stay away from?

    Started by dalin, 05-12-2008 07:23 PM
    • Replies: 4
    • Views: 1,018
    dalin
    06-01-2008, 09:54 PM Go to last post

  21. nike requin tn glisse portable

    Started by danaevztp, 11-04-2014 01:33 AM
    • Replies: 0
    • Views: 501
    danaevztp
    11-04-2014, 01:33 AM Go to last post

  22. Exhaust modifications on a Mercury 90 (year 2000)

    Started by Danbrown, 03-28-2011 06:30 AM
    • Replies: 1
    • Views: 2,057
    40hpmariner
    03-28-2011, 02:17 PM Go to last post

  23. Optimax external fuel filter?

    Started by DanielC, 06-24-2010 11:17 AM
    • Replies: 5
    • Views: 1,504
    DanielC
    06-25-2010, 10:00 AM Go to last post

  24. OPC Super-Sport information

    Started by Danny McManus, 08-31-2004 01:38 AM
    5 Pages •
    1 2 3 4 5
    4 Attachment(s)
    • Replies: 73
    • Views: 8,902
    Danny McManus
    07-19-2011, 12:39 AM Go to last post

  25. Question on EFI /Opti swap??

    Started by Daraco, 12-30-2007 04:03 PM
    • Replies: 4
    • Views: 1,282
    mad dan
    01-31-2008, 09:54 PM Go to last post

  26. Mercury changed from EFI to 225 Proxs prob

    Started by Daraco, 09-02-2008 07:01 PM
    • Replies: 0
    • Views: 576
    Daraco
    09-02-2008, 07:01 PM Go to last post

  27. Water sucking 300xs

    Started by darkdream, 04-17-2017 04:38 PM
    3 Attachment(s)
    • Replies: 7
    • Views: 1,980
    darkdream
    07-13-2017, 09:20 AM Go to last post

  28. Replace air compressor 300xs yes or no?

    Started by darkdream, 03-21-2018 11:48 AM
    air compressor optimax
    • Replies: 5
    • Views: 10,992
    sniper3726
    04-16-2018, 09:43 PM Go to last post

  29. 300xs DBR 1.1 or 1.3 software

    Started by darkdream, 12-20-2018 06:43 AM
    2 Pages •
    1 2
    300xs, dbr 4 Attachment(s)
    • Replies: 25
    • Views: 11,680
    darkdream
    01-24-2019, 03:56 AM Go to last post

  30. 300x tuner into a 300xs ?

    Started by darkdream, 11-28-2019 06:37 PM
    1 Attachment(s)
    • Replies: 6
    • Views: 3,115
    Chaz
    11-29-2019, 12:47 PM Go to last post

  31. Exhaust restrictor 300xs?

    Started by darkdream, 02-03-2020 10:59 AM
    3 Attachment(s)
    • Replies: 4
    • Views: 1,539
    billybob
    03-21-2020, 12:01 PM Go to last post

  32. Dts /shift problem Mercury Verado 250hp 2006

    Started by darkdream, 05-30-2020 11:47 AM
    • Replies: 3
    • Views: 2,709
    RSWORDS
    05-31-2020, 05:21 PM Go to last post

  33. Mercury 300xs HT tuner + poppet valve diverter?

    Started by darkdream, 12-10-2020 05:07 AM
    2 Attachment(s)
    • Replies: 4
    • Views: 5,963
    darkdream
    07-06-2022, 10:28 AM Go to last post

  34. Question 135-150-175 hp I-4 Verado

    Started by DarthVMAX, 12-08-2004 09:55 AM
    • Replies: 4
    • Views: 1,054
    Capt.Insane-o
    12-19-2004, 04:31 PM Go to last post

  35. Fast Honda

    Started by dash, 05-08-2006 07:53 PM
    1 Attachment(s)
    • Replies: 8
    • Views: 1,571
    dash
    05-11-2006, 07:18 PM Go to last post

  36. 200xs Sst

    Started by dash, 05-28-2006 10:44 PM
    • Replies: 4
    • Views: 1,356
    Stinky
    05-30-2006, 10:11 AM Go to last post

  37. Buying a 2003 Evinrude 175 Ficht Ram

    Started by davemb, 03-10-2009 11:22 AM
    • Replies: 2
    • Views: 4,227
    bigbore
    03-12-2009, 11:21 AM Go to last post

  38. 300xs open exhaust? raise compression?

    Started by davemvegas, 01-01-2014 08:47 PM
    2 Pages •
    1 2
    • Replies: 29
    • Views: 8,515
    Motv18
    04-04-2018, 06:47 PM Go to last post

  39. 300xs crankshaft question

    Started by davemvegas, 04-12-2014 12:46 AM
    3 Pages •
    1 2 3
    • Replies: 33
    • Views: 3,121
    baja200merk
    04-30-2014, 02:42 PM Go to last post

  40. 300 Verado overload in fuel hydrolock # 6

    Started by davepnola, 05-24-2017 09:38 PM
    • Replies: 0
    • Views: 685
    davepnola
    05-24-2017, 09:38 PM Go to last post
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