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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: 73,197
    cmn
    06-28-2015, 03:01 PM Go to last post

  1. Mercury 60 4S

    Started by slowJEEP, 02-02-2023 02:23 PM
    3 Pages •
    1 2 3
    2 Attachment(s)
    • Replies: 32
    • Views: 4,681
    prosken300
    Yesterday, 01:13 PM Go to last post

  2. 2005 Merc 300x rebuild

    Started by Mbenji01, 01-16-2025 08:54 PM
    • Replies: 2
    • Views: 963
    justthetip
    06-16-2025, 06:50 AM Go to last post

  3. Best place to purchase a new Merc outboard?

    Started by Tamalewagon, 02-18-2025 08:33 PM
    • Replies: 4
    • Views: 2,512
    LOSTINJ
    06-13-2025, 11:01 PM Go to last post

  4. Mercury 3L EGT individual cylinder egt

    Started by Amatuer, 04-12-2025 11:44 PM
    1 Attachment(s)
    • Replies: 2
    • Views: 702
    LOSTINJ
    06-12-2025, 10:22 PM Go to last post

  5. Code 4602-23

    Started by Toffen, 05-24-2025 03:00 PM
    • Replies: 5
    • Views: 1,052
    Toffen
    06-01-2025, 03:33 PM Go to last post

  6. 300xs Overheat

    Started by Mr. Jones, 05-18-2025 08:14 PM
    • Replies: 4
    • Views: 1,143
    David - WI
    05-28-2025, 02:18 PM Go to last post

  7. 150 optimax rough/unstable idle, stalls when shifting into gear. Runs ok above idle

    Started by Michsnet, 04-22-2025 12:52 PM
    1 Attachment(s)
    • Replies: 0
    • Views: 717
    Michsnet
    04-22-2025, 12:52 PM Go to last post

  8. 300XS alternator problems

    Started by JR IN JAX, 10-15-2024 06:49 PM
    • Replies: 4
    • Views: 1,586
    mr fun
    04-09-2025, 02:13 PM Go to last post

  9. Optimax Air Injectors

    Started by clayc, 07-15-2022 11:03 AM
    4 Pages •
    1 2 3 4
    • Replies: 50
    • Views: 10,696
    Bassfisher360
    02-07-2025, 04:23 PM Go to last post

  10. Older Optimax 150

    Started by Glastron1987, 12-29-2024 07:27 PM
    • Replies: 5
    • Views: 1,113
    FMP
    01-04-2025, 12:39 PM Go to last post

  11. Anyone running a Brp 3 cyl 150?

    Started by powerabout, 08-18-2024 08:27 PM
    • Replies: 4
    • Views: 1,174
    josh7_78
    01-02-2025, 05:17 PM Go to last post

  12. 225 Optimax Pro XS performance.

    Started by Bassfisher360, 11-24-2024 09:19 AM
    • Replies: 6
    • Views: 1,388
    Bassfisher360
    11-24-2024, 07:09 PM Go to last post

  13. Optimax 150 feedback wanted…

    Started by Euroski, 09-22-2024 10:40 AM
    • Replies: 1
    • Views: 956
    Bassfisher360
    11-24-2024, 09:17 AM Go to last post

  14. Fastest 4 stroke 40hp?

    Started by yakfish, 09-08-2024 05:01 PM
    • Replies: 0
    • Views: 631
    yakfish
    09-08-2024, 05:01 PM Go to last post

  15. 1993 XRi 200hp no fuel to cylinders

    Started by Vieacinq, 08-16-2024 07:34 AM
    2 Pages •
    1 2
    4 Attachment(s)
    • Replies: 15
    • Views: 3,186
    tlwjkw
    08-24-2024, 05:37 AM Go to last post

  16. Looking to pair a fishing boat with my 2003 ProXS 250 -

    Started by Fstarockr, 08-19-2024 10:15 AM
    • Replies: 1
    • Views: 995
    aj06bolt12r
    08-19-2024, 02:06 PM Go to last post

  17. Optimax: What to do after being submerged

    Started by Kevin Turner, 06-08-2024 06:06 PM
    • Replies: 8
    • Views: 2,793
    2us70
    06-18-2024, 11:42 AM Go to last post

  18. Yamaha SHO Solid mounts and lower unit mods

    Started by xb03fs, 02-18-2015 08:32 AM
    2 Pages •
    1 2
    • Replies: 16
    • Views: 4,226
    GETBOATS
    05-31-2024, 03:03 PM Go to last post

  19. Anyone make oversized pistons for a Suzuki DF 150 4t

    Started by ratman67, 05-11-2024 10:23 PM
    • Replies: 4
    • Views: 1,014
    rock
    05-13-2024, 07:55 AM Go to last post

  20. 25 Tohatsu

    Started by Thumper121671, 05-09-2024 04:16 PM
    • Replies: 0
    • Views: 665
    Thumper121671
    05-09-2024, 04:16 PM Go to last post

  21. Optimax Air Injector Connector

    Started by MadMat, 04-27-2024 03:16 AM
    2 Attachment(s)
    • Replies: 2
    • Views: 768
    4Speed
    05-04-2024, 05:34 PM Go to last post

  22. Mercury Racing Verado L4 200

    Started by Han, 03-18-2024 12:52 AM
    • Replies: 4
    • Views: 1,392
    HydroSkreamin
    04-11-2024, 03:22 PM Go to last post

  23. Mercury Marine ECU repair

    Started by Simon, 03-14-2024 04:17 PM
    • Replies: 3
    • Views: 1,454
    PaulR
    03-18-2024, 01:28 PM Go to last post

  24. Hpdi medium pressure fuel filter alternative

    Started by foodie, 10-07-2023 05:26 AM
    • Replies: 1
    • Views: 958
    Robert
    02-15-2024, 09:24 AM Go to last post

  25. Mercury Dominates Big OB 4 Stroke Market

    Started by WaterZebra, 07-03-2023 10:21 PM
    1 Attachment(s)
    • Replies: 9
    • Views: 3,019
    NICE PAIR
    01-28-2024, 03:13 PM Go to last post

  26. I think Mercury Racing should make this!

    Started by Scream And Fly, 01-14-2024 08:17 AM
    1 Attachment(s)
    • Replies: 3
    • Views: 1,868
    mragu
    01-14-2024, 08:03 PM Go to last post

  27. *** SPY PHOTOS*** ETEC Drag

    Started by FlowMaxx, 06-07-2010 07:02 PM
    57 Pages •
    1 2 3 4 5 6 7 8 9 10 ... 57
    47 Attachment(s)
    • Replies: 847
    • Views: 204,762
    wicheckmate
    01-11-2024, 09:47 PM Go to last post

  28. BRP E Tec 250

    Started by Boosting, 11-02-2023 03:53 PM
    • Replies: 2
    • Views: 1,657
    idvette
    12-31-2023, 08:30 AM Go to last post

  29. Yamaha HPDI ECU Mods

    Started by lance, 03-04-2013 10:13 AM
    3 Pages •
    1 2 3
    3 Attachment(s)
    • Replies: 38
    • Views: 21,648
    Yamaha 225
    11-23-2023, 10:10 PM Go to last post

  30. Optimax Fuel Rail

    Started by lowedown, 11-17-2023 05:34 PM
    • Replies: 4
    • Views: 1,385
    InjectorService
    11-20-2023, 11:47 AM Go to last post

  31. Honda V8 350 HP

    Started by WaterZebra, 11-16-2023 11:04 AM
    • Replies: 0
    • Views: 899
    WaterZebra
    11-16-2023, 11:04 AM Go to last post

  32. If your XS suddenly becomes sick and won't get on a plane or go above 2500 RPM....

    Started by JR IN JAX, 11-14-2023 09:08 AM
    • Replies: 4
    • Views: 1,893
    bouyhead
    11-15-2023, 08:33 PM Go to last post

  33. Merc 300/450 air vents

    Started by Hebert519, 08-09-2023 03:25 PM
    2 Pages •
    1 2
    4 Attachment(s)
    • Replies: 17
    • Views: 7,068
    Beak Boater
    11-08-2023, 05:29 PM Go to last post

  34. Evinrude 150 ficht

    Started by SRU, 10-21-2023 06:03 AM
    • Replies: 0
    • Views: 1,066
    SRU
    10-21-2023, 06:03 AM Go to last post

  35. Chasing Yamaha HPDI 300 service manual

    Started by foodie, 10-09-2023 04:57 AM
    • Replies: 1
    • Views: 868
    aj06bolt12r
    10-18-2023, 06:33 AM Go to last post

  36. 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
    31 Attachment(s)
    • Replies: 48
    • Views: 11,531
    canuckr
    10-04-2023, 07:35 AM Go to last post

  37. Opti Fuel system rebuild kit?

    Started by DieselDood, 09-27-2023 04:28 PM
    • Replies: 1
    • Views: 1,065
    XstreamVking
    09-28-2023, 07:34 AM Go to last post

  38. Opti Computers

    Started by DieselDood, 09-26-2023 04:08 PM
    • Replies: 4
    • Views: 1,192
    DieselDood
    09-27-2023, 08:33 AM Go to last post

  39. 225 Opti First fire

    Started by DieselDood, 09-20-2023 09:01 AM
    • Replies: 12
    • Views: 1,584
    DieselDood
    09-23-2023, 04:10 PM Go to last post

  40. how the Optimax Multi-Point Oil Pump works

    Started by noli, 01-06-2019 08:59 AM
    • Replies: 6
    • Views: 7,795
    XstreamVking
    09-18-2023, 11:15 AM Go to last post
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