GDI vs MPI

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Thread: GDI vs MPI

  1. #1
    Newbie
    Join Date
    Mar 2019
    Posts
    3

    GDI vs MPI

    Hi,
    The early Souls have MPI engines if I'm correct and then they went to GDI engines, which they say Direct Inject engines gives better fuel mpg and more HP?
    But for the 2020 souls I see they went back to MPI?
    Is this a con or a pro?
    Thanks.

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  3. #2
    Elder Soul GeoSoul's Avatar
    Join Date
    Apr 2014
    Location
    Pacific NW
    Posts
    4,984
    Drives
    Soul MT/2014/Titanium
    Welcome kf!

    You are a newbie, so you'll find this has been discussed ad nauseum. Try searching "carbon buildup" issues & always check the "Similar Threads" box at the bottom for more like minded chatter.

    You can also Google the subject.

    In a nutshell, GDI engines, especially early ones, left carbon deposits on the back side of the intake valves, as they spray gas directly into the combustion chamber. MPI sprays behind the valve, cleaning it on the way to the combustion chamber.

    While GDI did provide better mileage, the new MPI engines are getting even better, so that argument doesn't seem valid anymore.

  4. #3
    Intermediate Soul
    Join Date
    Jul 2015
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    West Michigan
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    ! /2015/Fathom/Umber
    GDI allows for higher compression since the fuel isn't heated up by crossing over the valve. I'm not sure this matters in a non-turbocharged engine tho

    Sent from my SM-T820 using Tapatalk

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