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Threads 1 to 40 of 1456

Forum: Four Stroke and Direct Injected Two Stroke Engines

Low-emissions outboard engines.

Sponsored by: DBR - Dave Bush Racing

  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: 62,305
    cmn
    06-28-2015, 03:01 PM Go to last post

  1. Opti Fuel system rebuild kit?

    Started by DieselDood, 09-27-2023 04:28 PM
    • Replies: 1
    • Views: 136
    XstreamVking
    09-28-2023, 07:34 AM Go to last post

  2. Opti Computers

    Started by DieselDood, 09-26-2023 04:08 PM
    • Replies: 4
    • Views: 120
    DieselDood
    09-27-2023, 08:33 AM Go to last post

  3. 225 Opti First fire

    Started by DieselDood, 09-20-2023 09:01 AM
    • Replies: 12
    • Views: 299
    DieselDood
    09-23-2023, 04:10 PM Go to last post

  4. how the Optimax Multi-Point Oil Pump works

    Started by noli, 01-06-2019 08:59 AM
    • Replies: 6
    • Views: 6,460
    XstreamVking
    09-18-2023, 11:15 AM Go to last post

  5. 2000 Optimax 225 starts & Stalls

    Started by MadMat, 09-11-2023 01:55 AM
    • Replies: 4
    • Views: 192
    XstreamVking
    09-12-2023, 07:58 AM Go to last post

  6. Merc 300/450 air vents

    Started by Hebert519, 08-09-2023 03:25 PM
    4 Attachment(s)
    • Replies: 14
    • Views: 1,103
    Prop Barker
    09-07-2023, 08:06 PM Go to last post

  7. Broken spring in fuel pressure reg on optimax.

    Started by XstreamVking, 09-07-2023 07:58 AM
    • Replies: 0
    • Views: 62
    XstreamVking
    09-07-2023, 07:58 AM Go to last post

  8. Compressor rebuild on Optimax 135

    Started by littledoodie99, 08-10-2023 10:04 AM
    • Replies: 6
    • Views: 372
    littledoodie99
    08-16-2023, 08:49 PM Go to last post

  9. 2003 225 Optimax fuel/air problems

    Started by velox, 08-04-2023 10:19 AM
    225 optimax, direct fuel injection
    • Replies: 7
    • Views: 250
    velox
    08-06-2023, 11:23 AM Go to last post

  10. Optimax air injectors flow too high after cleaning = problem or no?

    Started by motuman, 07-31-2023 04:36 PM
    1 Attachment(s)
    • Replies: 3
    • Views: 271
    motuman
    08-05-2023, 02:24 PM Go to last post

  11. White Smoke/misfire optimax 250 xs 2003

    Started by Edgewater225, 05-29-2023 04:37 PM
    2 Pages •
    1 2
    5 Attachment(s)
    • Replies: 23
    • Views: 1,082
    Edgewater225
    07-30-2023, 12:04 PM Go to last post

  12. Mercury 60r

    Started by NZ Sidewinder, 07-11-2023 04:22 AM
    5 Attachment(s)
    • Replies: 11
    • Views: 1,142
    Rsatch
    07-27-2023, 07:24 AM Go to last post

  13. 300xs...possible compressor problem?

    Started by motuman, 07-20-2023 11:51 PM
    2 Attachment(s)
    • Replies: 8
    • Views: 810
    motuman
    07-23-2023, 01:10 PM Go to last post

  14. 2001 Yamaha 150 hpdi

    Started by traviss224, 07-20-2023 08:50 AM
    2 Attachment(s)
    • Replies: 8
    • Views: 348
    allaction
    07-20-2023, 12:34 PM Go to last post

  15. Mercury Dominates Big OB 4 Stroke Market

    Started by WaterZebra, 07-03-2023 10:21 PM
    • Replies: 8
    • Views: 1,258
    InjectorService
    07-05-2023, 07:10 PM Go to last post

  16. Etec 2013 250 Hp

    Started by MrG, 06-13-2023 05:16 PM
    • Replies: 6
    • Views: 674
    MrG
    06-18-2023, 06:29 AM Go to last post

  17. Optimax. Unplugged wire, plug it back in?

    Started by Edgewater225, 06-03-2023 02:26 PM
    1 Attachment(s)
    • Replies: 5
    • Views: 447
    MrG
    06-13-2023, 05:12 PM Go to last post

  18. 2 Stroke is performance King

    Started by Lake X Kid, 02-11-2023 05:10 PM
    2 Pages •
    1 2
    1 Attachment(s)
    • Replies: 15
    • Views: 1,702
    Dave S
    06-12-2023, 08:50 PM Go to last post

  19. 300x

    Started by Tooned In, 05-15-2023 04:18 PM
    • Replies: 0
    • Views: 185
    Tooned In
    05-15-2023, 04:18 PM Go to last post

  20. Mercury 60 4S

    Started by slowJEEP, 02-02-2023 02:23 PM
    2 Pages •
    1 2
    1 Attachment(s)
    • Replies: 27
    • Views: 1,183
    derekfl
    05-11-2023, 02:46 PM Go to last post

  21. Powerhead change

    Started by Scrutcher, 04-24-2023 06:22 AM
    • Replies: 2
    • Views: 402
    XstreamVking
    04-28-2023, 06:45 AM Go to last post

  22. Lower unit ID

    Started by fischnrod, 03-18-2020 06:35 PM
    • Replies: 1
    • Views: 606
    SPD
    04-20-2023, 12:16 PM Go to last post

  23. Looking for a 1999 evinrude ficht emm

    Started by davepnola, 04-12-2020 10:39 PM
    2 Attachment(s)
    • Replies: 4
    • Views: 3,645
    SPD
    04-20-2023, 12:10 PM Go to last post

  24. buying a 175 merc optimax pro xs. on boat but not rigged. what all do i need?

    Started by derekfl, 03-26-2023 06:52 AM
    • Replies: 7
    • Views: 354
    Onetime
    03-29-2023, 10:06 AM Go to last post

  25. Any advice to share? 2017 Verado 250HP. Looking for a 300HP PCM

    Started by Scoob, 02-05-2023 01:11 PM
    • Replies: 2
    • Views: 471
    Scoob
    02-06-2023, 11:59 PM Go to last post

  26. Yamaha F50/F60 difference.

    Started by Mark Poole ModVP, 01-13-2023 03:08 PM
    1 Attachment(s)
    • Replies: 3
    • Views: 689
    slowJEEP
    02-02-2023, 11:36 AM Go to last post

  27. Yamaha HPDI build/port work (let's talk port timing)

    Started by canuckr, 02-13-2021 12:04 PM
    4 Pages •
    1 2 3 4
    34 Attachment(s)
    • Replies: 46
    • Views: 6,754
    MrG
    01-14-2023, 12:33 PM Go to last post

  28. 250 ProXS Tuner

    Started by clayc, 06-26-2022 07:41 PM
    • Replies: 10
    • Views: 1,207
    MrG
    01-14-2023, 11:29 AM Go to last post

  29. E tec 250 powerhead on ficht midsection

    Started by Tobb1, 07-19-2018 12:59 PM
    • Replies: 10
    • Views: 1,595
    MrG
    01-14-2023, 11:21 AM Go to last post

  30. Optimax flywheel dampener

    Started by Promaxin, 12-28-2022 02:58 AM
    • Replies: 3
    • Views: 559
    CUDA
    01-14-2023, 06:47 AM Go to last post

  31. Aftermarket injectors

    Started by bakerfreak, 08-25-2022 12:00 PM
    • Replies: 7
    • Views: 1,347
    stoker2001
    12-10-2022, 11:56 PM Go to last post

  32. Easiest way to use ddt on engine off boat

    Started by LOSTINJ, 11-24-2022 09:25 AM
    1 Attachment(s)
    • Replies: 10
    • Views: 934
    LOSTINJ
    11-26-2022, 09:54 PM Go to last post

  33. 300xs Fluctuating fuel burn

    Started by CPC, 11-15-2022 08:32 AM
    • Replies: 2
    • Views: 414
    HydroSkreamin
    11-22-2022, 07:53 PM Go to last post

  34. Hydro-tec tuner for 300xs ?

    Started by LOSTINJ, 10-30-2022 08:08 AM
    • Replies: 2
    • Views: 682
    LOSTINJ
    11-20-2022, 05:48 PM Go to last post

  35. Merc 300R Fuel Consumption

    Started by Hebert519, 08-03-2022 12:35 PM
    2 Pages •
    1 2
    • Replies: 22
    • Views: 3,216
    Pulsare2400
    10-29-2022, 10:01 AM Go to last post

  36. 300 promax to 300xs question

    Started by spearhunter7, 06-03-2013 05:21 PM
    3 Pages •
    1 2 3
    2 Attachment(s)
    • Replies: 34
    • Views: 6,369
    Todd D
    10-24-2022, 11:59 AM Go to last post

  37. 3.3 conversion to 3 ltr heads

    Started by MrG, 06-20-2022 10:28 AM
    • Replies: 1
    • Views: 636
    Affromax
    09-10-2022, 11:11 AM Go to last post

  38. Recall from mercury on some of.the new 225 and 250 XS four strokes

    Started by XstreamVking, 08-30-2022 06:03 AM
    • Replies: 1
    • Views: 670
    Jamie Nichols
    09-08-2022, 09:13 PM Go to last post

  39. Optimax Air Injectors

    Started by clayc, 07-15-2022 11:03 AM
    3 Pages •
    1 2 3
    • Replies: 43
    • Views: 4,168
    ChrisCarsonMarine
    09-08-2022, 10:17 AM Go to last post

  40. Spark Test Gap

    Started by clayc, 08-30-2022 05:30 PM
    • Replies: 1
    • Views: 409
    rgsauger
    08-30-2022, 11:41 PM Go to last post
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