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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
    • Replies: 37
    • Views: 35,687
    06-28-2015, 03:01 PM Go to last post
  1. 225 Optimax problem

    Started by lvnspeed, 03-25-2019 01:05 PM
    • Replies: 9
    • Views: 603
    04-12-2019, 07:43 PM Go to last post
  2. Mercury V8 build with mustang cobra parts recipe?

    Started by madmatic, 04-08-2019 03:55 PM
    • Replies: 8
    • Views: 1,541
    04-10-2019, 08:28 PM Go to last post
  3. Optimax reeds

    Started by Seapro mike, 03-25-2019 06:07 PM
    • Replies: 2
    • Views: 749
    03-31-2019, 10:28 AM Go to last post
  4. New Mercury 300 Pro XS V8 vs 300R V8

    Started by Skip 7750, 05-20-2018 06:04 PM
    4 Pages
    1 2 3 4
    • Replies: 45
    • Views: 15,518
    03-26-2019, 08:28 PM Go to last post
  5. 03 225 opti

    Started by Seapro mike, 03-10-2019 06:05 PM
    • Replies: 1
    • Views: 1,433
    03-10-2019, 08:12 PM Go to last post
  6. New Suzuki 200 4 Strokes?

    Started by ProComp, 07-12-2005 12:33 PM
    • Replies: 10
    • Views: 1,428
    03-08-2019, 02:56 PM Go to last post
  7. Whats better? 250 EFI mere or 250 opti

    Started by jcoop421, 03-03-2019 12:13 PM
    • Replies: 10
    • Views: 531
    03-04-2019, 10:53 AM Go to last post
  8. 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: 1,327
    02-27-2019, 09:34 AM Go to last post
  9. 300R nonsense thread

    Started by marks86, 07-24-2018 11:25 AM
    8 Pages
    1 2 3 4 5 6 7 8
    • Replies: 111
    • Views: 11,348
    02-23-2019, 07:56 PM Go to last post
  10. Suzuki DF175 Flush coolant passages?

    Started by Mhall222, 02-02-2019 02:29 PM
    • Replies: 4
    • Views: 553
    02-20-2019, 09:23 PM Go to last post
  11. How to clean or rebuild your Mercury VST

    Started by noli, 02-17-2019 09:41 AM
    • Replies: 4
    • Views: 468
    02-18-2019, 07:14 PM Go to last post
  12. CARB reports

    Started by PRE-Z06, 02-03-2019 10:29 PM
    • Replies: 8
    • Views: 1,058
    02-15-2019, 08:05 AM Go to last post
  13. New vs old mercury edition

    Started by Matt Torino 150, 02-10-2019 12:31 AM
    • Replies: 14
    • Views: 1,980
    02-11-2019, 10:44 PM Go to last post
  14. Lower unit length

    Started by PRE-Z06, 02-05-2019 03:59 PM
    • Replies: 2
    • Views: 1,432
    02-09-2019, 09:36 PM Go to last post
  15. Opti owners manual....

    Started by rutro, 01-27-2019 12:58 PM
    • Replies: 5
    • Views: 607
    02-05-2019, 09:06 AM Go to last post
  16. Merc four-stroke 115 ProXs tell-tale temp

    Started by Ted Stryker, 01-22-2019 12:08 PM
    • Replies: 11
    • Views: 546
    02-01-2019, 11:54 AM Go to last post
  17. 250xs higher compression

    Started by xb03fs, 01-27-2019 10:51 AM
    • Replies: 2
    • Views: 324
    01-28-2019, 02:37 AM Go to last post
  18. 300xs DBR 1.1 or 1.3 software

    Started by darkdream, 12-20-2018 06:43 AM
    2 Pages
    1 2
    • Replies: 25
    • Views: 4,741
    01-24-2019, 03:56 AM Go to last post
  19. Measuring cylinder bore, taper, and out-of-round

    Started by noli, 01-18-2019 08:35 PM
    • Replies: 4
    • Views: 3,962
    01-18-2019, 10:19 PM Go to last post
  20. how the Optimax Multi-Point Oil Pump works

    Started by noli, 01-06-2019 08:59 AM
    • Replies: 4
    • Views: 2,788
    01-14-2019, 03:26 PM Go to last post
  21. Optimax charging issues

    Started by miagonz85, 10-03-2018 11:11 PM
    • Replies: 7
    • Views: 1,263
    01-07-2019, 09:46 PM Go to last post
  22. 300xs exhaust plate options

    Started by stealthperf, 08-18-2018 01:11 PM
    • Replies: 1
    • Views: 504
    01-05-2019, 08:18 PM Go to last post
  23. 300 xs alarm

    Started by toddb, 09-04-2018 06:18 AM
    • Replies: 9
    • Views: 1,045
    01-05-2019, 02:26 PM Go to last post
  24. V8 pro xs ECM?

    Started by Jamie Nichols, 07-26-2018 01:36 PM
    3 Pages
    1 2 3
    • Replies: 40
    • Views: 3,242
    01-01-2019, 07:37 PM Go to last post
  25. Mariner 300 vs Mercury 300x?

    Started by miagonz85, 12-02-2018 06:27 AM
    • Replies: 1
    • Views: 1,440
    12-25-2018, 04:14 PM Go to last post
  26. oil injection replacement hose options

    Started by 288sunny, 12-23-2018 08:07 PM
    • Replies: 0
    • Views: 2,765
    12-23-2018, 08:07 PM Go to last post
  27. Hello Everyone

    Started by fastdragon, 12-18-2018 12:23 PM
    • Replies: 1
    • Views: 354
    12-19-2018, 09:28 AM Go to last post
  28. Injector cleaning help 2007 300xs

    Started by 288sunny, 11-18-2018 07:21 PM
    • Replies: 2
    • Views: 541
    12-09-2018, 11:10 AM Go to last post
    • Replies: 7
    • Views: 1,004
    12-04-2018, 12:14 AM Go to last post
  29. 300xs Bench power-up

    Started by Davidlake, 12-02-2018 11:08 AM
    • Replies: 2
    • Views: 3,136
    12-02-2018, 11:56 AM Go to last post
  30. NEW Simon Performance Technology Mercury PCM flash tool

    Started by Simon, 11-09-2017 09:48 PM
    3 Pages
    1 2 3
    • Replies: 37
    • Views: 10,377
    11-22-2018, 07:34 PM Go to last post
    • Replies: 1
    • Views: 509
    11-20-2018, 02:00 PM Go to last post
  31. New Mercury 4-stroke specs

    Started by PRE-Z06, 11-13-2018 12:13 AM
    • Replies: 0
    • Views: 5,867
    11-13-2018, 12:13 AM Go to last post
  32. 250 getting ready to breath better

    Started by xb03fs, 10-21-2018 04:31 PM
    • Replies: 9
    • Views: 736
    11-06-2018, 11:58 PM Go to last post
  33. Rigging tube replacement help 2007 300XS

    Started by 288sunny, 11-04-2018 08:59 AM
    • Replies: 1
    • Views: 517
    11-05-2018, 03:07 PM Go to last post
  34. Vessel view for 40 hp 4 stroke

    Started by fs5, 10-31-2018 05:24 AM
    • Replies: 3
    • Views: 673
    10-31-2018, 06:58 AM Go to last post
  35. Outboard weights

    Started by PRE-Z06, 10-23-2018 12:06 PM
    2 Pages
    1 2
    • Replies: 15
    • Views: 1,334
    10-25-2018, 06:13 PM Go to last post

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