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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: 65,968
    cmn
    06-28-2015, 03:01 PM Go to last post

  1. 98 250efi bleed line check valve alternatives?

    Started by GUGS, 05-06-2019 10:47 PM
    • Replies: 1
    • Views: 5,451
    Chaz
    05-07-2019, 08:11 AM Go to last post

  2. 300XS Attenuator Top hole size

    Started by savage, 05-02-2019 06:19 AM
    2 Pages •
    1 2
    1 Attachment(s)
    • Replies: 26
    • Views: 9,114
    NICE PAIR
    05-06-2019, 08:44 AM Go to last post

  3. v8 merc 200hp

    Started by R.grover, 04-25-2019 05:39 PM
    • Replies: 6
    • Views: 2,357
    PRE-Z06
    04-28-2019, 07:32 AM Go to last post

  4. Question 1999 mariner 135 optimax dfi... Rpm studder at 3500rpm

    Started by Blakes, 03-29-2019 10:33 PM
    dfi 135, mariner 135, optimax 135
    • Replies: 8
    • Views: 4,395
    Blakes
    04-27-2019, 11:17 PM Go to last post

  5. EFI. Tuner chip Magnum tuning

    Started by Blownbillybob, 04-20-2019 04:41 PM
    • Replies: 2
    • Views: 3,742
    TwzteD
    04-25-2019, 04:37 AM Go to last post

  6. Exclamation 2006 225hp Optimax issues

    Started by Rtc1184, 04-13-2019 10:00 PM
    • Replies: 8
    • Views: 2,921
    Motv18
    04-15-2019, 10:43 PM Go to last post

  7. Merc 4S 150 plugs - Precious metal "dot" Iridium

    Started by CircleHook, 03-25-2019 06:24 AM
    • Replies: 5
    • Views: 1,537
    XstreamVking
    04-15-2019, 06:57 AM Go to last post

  8. 225 Optimax problem

    Started by lvnspeed, 03-25-2019 01:05 PM
    1 Attachment(s)
    • Replies: 9
    • Views: 2,842
    Steve Pope
    04-12-2019, 07:43 PM Go to last post

  9. Mercury V8 build with mustang cobra parts recipe?

    Started by madmatic, 04-08-2019 03:55 PM
    • Replies: 8
    • Views: 3,949
    Motv18
    04-10-2019, 08:28 PM Go to last post

  10. Optimax reeds

    Started by Seapro mike, 03-25-2019 06:07 PM
    • Replies: 2
    • Views: 1,899
    Seapro mike
    03-31-2019, 10:28 AM Go to last post

  11. throttle stop adjustment, Pressure Regulator housing broken - merc 250 3.0 EFI

    Started by GUGS, 03-13-2019 04:48 PM
    • Replies: 0
    • Views: 3,465
    GUGS
    03-13-2019, 04:48 PM Go to last post

  12. 03 225 opti

    Started by Seapro mike, 03-10-2019 06:05 PM
    • Replies: 1
    • Views: 4,678
    2jz
    03-10-2019, 08:12 PM Go to last post

  13. New Suzuki 200 4 Strokes?

    Started by ProComp, 07-12-2005 12:33 PM
    • Replies: 10
    • Views: 3,429
    RSWORDS
    03-08-2019, 02:56 PM Go to last post

  14. Whats better? 250 EFI mere or 250 opti

    Started by jcoop421, 03-03-2019 12:13 PM
    • Replies: 10
    • Views: 3,371
    jcoop421
    03-04-2019, 10:53 AM Go to last post

  15. Is Merc having 4 stroke remorse ?? Another option for older boat owners

    Started by 22R, 02-24-2019 10:26 AM
    2 Pages •
    1 2
    • Replies: 18
    • Views: 5,036
    bouyhead
    02-27-2019, 09:34 AM Go to last post

  16. 300R nonsense thread

    Started by marks86, 07-24-2018 11:25 AM
    8 Pages •
    1 2 3 4 5 6 7 8
    6 Attachment(s)
    • Replies: 111
    • Views: 21,918
    Dave S
    02-23-2019, 07:56 PM Go to last post

  17. Suzuki DF175 Flush coolant passages?

    Started by Mhall222, 02-02-2019 02:29 PM
    2 Attachment(s)
    • Replies: 4
    • Views: 1,876
    Jamie Nichols
    02-20-2019, 09:23 PM Go to last post

  18. CARB reports

    Started by PRE-Z06, 02-03-2019 10:29 PM
    • Replies: 8
    • Views: 2,230
    PRE-Z06
    02-15-2019, 08:05 AM Go to last post

  19. New vs old mercury edition

    Started by Matt Torino 150, 02-10-2019 12:31 AM
    1 Attachment(s)
    • Replies: 14
    • Views: 4,363
    Matt Torino 150
    02-11-2019, 10:44 PM Go to last post

  20. Lower unit length

    Started by PRE-Z06, 02-05-2019 03:59 PM
    • Replies: 2
    • Views: 3,062
    PRE-Z06
    02-09-2019, 09:36 PM Go to last post

  21. Opti owners manual....

    Started by rutro, 01-27-2019 12:58 PM
    • Replies: 5
    • Views: 1,599
    Motv18
    02-05-2019, 09:06 AM Go to last post

  22. Merc four-stroke 115 ProXs tell-tale temp

    Started by Ted Stryker, 01-22-2019 12:08 PM
    • Replies: 11
    • Views: 1,664
    Ted Stryker
    02-01-2019, 11:54 AM Go to last post

  23. 250xs higher compression

    Started by xb03fs, 01-27-2019 10:51 AM
    1 Attachment(s)
    • Replies: 2
    • Views: 1,899
    Motv18
    01-28-2019, 02:37 AM Go to last post

  24. 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: 11,773
    darkdream
    01-24-2019, 03:56 AM Go to last post

  25. How to Lap your reed cages, and de-burr the front-half for better flow

    Started by noli, 01-19-2019 10:17 PM
    • Replies: 0
    • Views: 2,324
    noli
    01-19-2019, 10:17 PM Go to last post

  26. Measuring cylinder bore, taper, and out-of-round

    Started by noli, 01-18-2019 08:35 PM
    1 Attachment(s)
    • Replies: 4
    • Views: 6,332
    2jz
    01-18-2019, 10:19 PM Go to last post

  27. Optimax charging issues

    Started by miagonz85, 10-03-2018 11:11 PM
    • Replies: 7
    • Views: 2,925
    RSWORDS
    01-07-2019, 09:46 PM Go to last post

  28. 300xs exhaust plate options

    Started by stealthperf, 08-18-2018 01:11 PM
    • Replies: 1
    • Views: 2,304
    BaxterPointYachtClub
    01-05-2019, 08:18 PM Go to last post

  29. 300 xs alarm

    Started by toddb, 09-04-2018 06:18 AM
    • Replies: 9
    • Views: 2,881
    Duro78
    01-05-2019, 02:26 PM Go to last post

  30. V8 pro xs ECM?

    Started by Jamie Nichols, 07-26-2018 01:36 PM
    3 Pages •
    1 2 3
    • Replies: 40
    • Views: 9,118
    PRE-Z06
    01-01-2019, 07:37 PM Go to last post

  31. Mariner 300 vs Mercury 300x?

    Started by miagonz85, 12-02-2018 06:27 AM
    • Replies: 1
    • Views: 2,799
    Duro78
    12-25-2018, 04:14 PM Go to last post

  32. oil injection replacement hose options

    Started by 288sunny, 12-23-2018 08:07 PM
    • Replies: 0
    • Views: 6,055
    288sunny
    12-23-2018, 08:07 PM Go to last post

  33. Hello Everyone

    Started by fastdragon, 12-18-2018 12:23 PM
    1 Attachment(s)
    • Replies: 1
    • Views: 1,688
    NICE PAIR
    12-19-2018, 09:28 AM Go to last post

  34. Injector cleaning help 2007 300xs

    Started by 288sunny, 11-18-2018 07:21 PM
    • Replies: 2
    • Views: 1,773
    Motv18
    12-09-2018, 11:10 AM Go to last post

  35. 60 HO/75/90 HP ETEC's Good Engines? Dependable?

    Started by Maxacceleration, 12-01-2018 07:19 PM
    • Replies: 7
    • Views: 2,369
    Baja16
    12-04-2018, 12:14 AM Go to last post

  36. 300xs Bench power-up

    Started by Davidlake, 12-02-2018 11:08 AM
    • Replies: 2
    • Views: 9,481
    Davidlake
    12-02-2018, 11:56 AM Go to last post

  37. Merc 150 4s 3 lt - have 2 - they sound different

    Started by CircleHook, 11-20-2018 07:13 AM
    • Replies: 1
    • Views: 779
    badfish
    11-20-2018, 02:00 PM Go to last post

  38. New Mercury 4-stroke specs

    Started by PRE-Z06, 11-13-2018 12:13 AM
    • Replies: 0
    • Views: 7,845
    PRE-Z06
    11-13-2018, 12:13 AM Go to last post

  39. 250 getting ready to breath better

    Started by xb03fs, 10-21-2018 04:31 PM
    2 Attachment(s)
    • Replies: 9
    • Views: 2,183
    xb03fs
    11-06-2018, 11:58 PM Go to last post

  40. Rigging tube replacement help 2007 300XS

    Started by 288sunny, 11-04-2018 08:59 AM
    • Replies: 1
    • Views: 821
    XstreamVking
    11-05-2018, 03:07 PM Go to last post
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