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Mpi for apex reliability???

Discussion in '4 Stroke Turbos/Supercharger' started by justin gallant, Oct 4, 2018.


  1. justin gallant

    justin gallant VIP Member VIP Member

    Messages:
    237
    Location:
    moncton
    Country:
    Canada
    Snowmobile:
    2006 apex GT
    LOCATION:
    moncton new-brunswick
    I can get a full mpi SC kit for my 06 apex at a real good deal, just wondering if these are reliable for trail. And do they still make parts if ever I need something?
     
  2.  
  3. MrSled

    MrSled Administrator Staff Member Admin Moderator VIP Member

    Messages:
    17,384
    Location:
    Schofield, WI
    Country:
    USA
    Snowmobile:
    2017 Sidewinder
    Low boost it works great but it will suck the fuel. They are not gas misers with a Supercharger.
     
    justin gallant likes this.
  4. Riceburner

    Riceburner Lifetime Member Lifetime VIP Member VIP Member

    Messages:
    1,730
    Location:
    N.B. Canada eh
    Country:
    Canada
    Snowmobile:
    SideWinder LTX 50th
    Mostly reliable, especially at low boost as Tom said. I loved mine on my RX 1 and had no issues on low boost.
    High boost was a bitch to tune the carb's . Apex is way easier.
    Rotrex blowers have been known to break and are very expensive to replace.
    MPI stopped dealing with Rotrex, I think, as they had issues with the Company.
    Not sure if MPI still supports them. Call them and ask.
     
    justin gallant and MrSled like this.
  5. justin gallant

    justin gallant VIP Member VIP Member

    Messages:
    237
    Location:
    moncton
    Country:
    Canada
    Snowmobile:
    2006 apex GT
    LOCATION:
    moncton new-brunswick
    so they are quite hard on fuel then?? not good for long hauls..hmmm
     
    MrSled likes this.
  6. MrSled

    MrSled Administrator Staff Member Admin Moderator VIP Member

    Messages:
    17,384
    Location:
    Schofield, WI
    Country:
    USA
    Snowmobile:
    2017 Sidewinder
    Correct.
     
  7. Riceburner

    Riceburner Lifetime Member Lifetime VIP Member VIP Member

    Messages:
    1,730
    Location:
    N.B. Canada eh
    Country:
    Canada
    Snowmobile:
    SideWinder LTX 50th
    I got about 105 miles out of a tank on my MPI 6 psi RX I on the trail riding moderately with a little race your buddy thrown in. 38 litre tank i think.
    I lost about 4 mpg vs my stock Warrior.
    Apex should be marginally better but not if you have a heavy thumb or run it rich.
     
    justin gallant likes this.
  8. Vmax4creed

    Vmax4creed Newbie

    Messages:
    11
    Location:
    PEI
    Country:
    Canada
    Snowmobile:
    2010 APEX
    They do not deal in Rotrex blowers any more , I was just talking to them last weak about a replacement for mine.
     
  9. Vmax4creed

    Vmax4creed Newbie

    Messages:
    11
    Location:
    PEI
    Country:
    Canada
    Snowmobile:
    2010 APEX
    That's not to say you can't get blowers just not from them.
     
  10. mpi xtx

    mpi xtx Extreme

    Messages:
    123
    Location:
    St.Albert, Ontario
    My personal experience is too stay as far away from those Rotrex blowers as possible
     
  11. kinger

    kinger VIP Member VIP Member

    Messages:
    6,085
    Location:
    Clear Lake, IA
    Man I'm the opposite here, I consider my MPI apex almost OEM reliable. Only one issue was a small oil leak on the mag seal after about 4000 miles. Otherwise flawless. I think the bad blowers were mainly on the Nytros?? Or maybe the newer blowers weren't as good as my older one and it wasn't model specific but at any rate I wouldn't stereotype every single rotrex blower as bad, there were many before and after me with not a single issue. I was more scared of turbos in my Apex and impulse fixed that. Disclaimer I am not a high miler I put on if I'm lucky 1000-1500 miles many times less. My criteria was good maintenance in the off season and once the snow flies I don't pop the hood...ever. Under those conditions the MPI apex never let me down.
     
    MrSled likes this.

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