Results 1 to 2 of 2
  1. #1
    Member fishinfoolsonny's Avatar
    Join Date
    Apr 2007
    Location
    Slidell, La
    Posts
    464

    3.1L EFI HP upgrades

    My buddy has a 200 hp on a zx200 skeeter, what are the differences between the 200, 225, 250 3.1L efi engines? He wants to hop it up to 250HP, is hydro tec the only route to take? Or is it just programing?
    Skeeter ZX200 , 200 HPDI

  2. Member HaulinBass's Avatar
    Join Date
    Jun 2004
    Location
    Springfield
    Posts
    6,324
    #2

    Re: 3.1L EFI HP upgrades (fishinfoolsonny)

    If I was to hypothetically hop up my engine, I would start with phasing then go from there. Hypothetically of course. Port polishing, BP etc. and eventually a brain box off a 225 or 250.
    Larry Eby, 2004 ChampioN 188 Elite/2003 200 Hp Vmax OX66
    "Romans 10:9"

Similar Threads

  1. pro xs upgrades?
    By RedBlazer in forum Mercury - 3 Liter & 3 Liter High Performance
    Replies: 3
    Last Post: 06-16-2011, 06:54 PM
  2. 225 efi upgrades done
    By runninrusty in forum Mercury - 3 Liter & 3 Liter High Performance
    Replies: 5
    Last Post: 03-30-2010, 01:42 AM
  3. 225 EFI ECU Upgrades...
    By NoSloProcraft in forum Mercury - 3 Liter & 3 Liter High Performance
    Replies: 9
    Last Post: 09-10-2009, 02:38 PM
  4. 250 XB upgrades
    By bass bullet in forum Mercury - 3 Liter & 3 Liter High Performance
    Replies: 1
    Last Post: 06-27-2009, 05:57 PM
  5. Upgrades and Add ons
    By mpsergeantmajor in forum Champion Boats
    Replies: 2
    Last Post: 06-14-2009, 01:52 PM