Results 1 to 3 of 3
  1. #1
    Join Date
    Feb 2005

    Default Indmar Assault 320 EFI VS 330 MPI

    Can any describe to me the differences between the 320 and 330 Indmar motor's available. What is the difference between EFI and MPI? Thanks.


  2. #2
    Join Date
    Aug 2004
    Hampton Ga

    Default Replying to Topic 'Indmar Assault 320 EFI VS 330 MPI'

    New for 2005 are 325 and 340. Both are true Multi-Port Injection, where the previous 320 is a TBI (Throttle Body Injection). My understanding is the MPI is a little more effiecient. Speaking with my car mechanic, he says I will notice the difference. The way to find out exactly what you want to know is to go the the Indmar website, and send them the question. THere is a guy named Larry there that has answered several questions for me and gets back promptly. I wanted to know from the people that builds and designs them what is the best and why.

    What are you looking at buying, because like I said, if you are buying a 2005 you only have 3 choices,,,,, 310 HP carburator, 325 HP MPI, 340 HP MPI.

    Gook Luck.


    2017 Moomba Craz
    Raptor 400
    Pacific Blue / Graphite

    1st - 1983 old brown boat - not sure the make
    2nd - 2001 Bayliner 185 4 cyl. Sold
    3rd - 2005 Moomba Möbius LSV. Sold

  3. #3
    Join Date
    Aug 2004
    Lake Hickory, North Carolina

    Default Replying to Topic 'Indmar Assault 320 EFI VS 330 MPI'

    Some of these posts I read tickle the heck out of's why........
    New boats are cool, but they will ALL eventually need worked on. I specifically went with a carb because if and when it comes time to work on it, I don't have to pay the dealer to fix it. If i don't like the carb I got, I can adjust it or I can replace it with another one. With the electronic ignitions on the boats now-a-days, carburetors are nowhere the problem potential they used to be. Heck, the occasional can of fuel treatment or carb cleaner ran through the fuel system (just like your 'regular' maintainence stuff) usually keeps carbs in tip-top shape.
    EfI's ARE the superior system, I'm not saying they're not. But, as I said, I don't have to pay someone to fix mine. carb kits are cheap, and i don't mind working on them.
    North Carolina
    Learn all you can today. Tomorrow you may need to know it!
    2004 Moomba Outback. Tower Speakers, amp, ballast, ssrr ... she's a cutie!

Similar Threads

  1. How many hours will the Indmar Last?
    By Moomba Newbie in forum General Chat
    Replies: 14
    Last Post: 04-10-2008, 09:40 PM
  2. Proper impeller for Indmar Assault 325
    By spyder in forum Service & Repair
    Replies: 2
    Last Post: 10-10-2007, 10:24 PM
  3. 2006 Outback w/ 310 Assault Carb Problems
    By WaterRoo in forum Service & Repair
    Replies: 5
    Last Post: 07-22-2007, 07:25 PM
  4. 350 Indmar
    By steveokanevo in forum General Chat
    Replies: 1
    Last Post: 07-02-2007, 04:22 PM
  5. What gas in 340 HP Indmar?
    By Bluesman in forum General Chat
    Replies: 4
    Last Post: 08-19-2005, 07:39 AM

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts