Low MPG after swapping out the stock intake manifold with the 37054 revision. 2010 III

Discussion in 'Gen 3 Prius Fuel Economy' started by DanielR, Feb 16, 2026 at 3:42 PM.

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  1. DanielR

    DanielR Junior Member

    Joined:
    May 1, 2023
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    Location:
    Virginia
    Vehicle:
    2010 Prius
    Model:
    Three
    Like the title says, the MPG won’t get above 40MPG after doing the swap from 17120-37050 to 17120-37054.

    I have heard tale of a secret, ancient software spell that may need to be uttered after doing this swap.

    What say all you Prius warlocks (and possibly witches)?

    2010 Prius III
    235,000 miles
    TechStream Enabled
     
    #1 DanielR, Feb 16, 2026 at 3:42 PM
  2. bisco

    bisco cookie crumbler

    Joined:
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    boston
    Vehicle:
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    Plug-in Base
    I have to think something wasn’t done correctly, but that’s all I can offer.
    Are you measuring mpgs by calculating at the pump?
     
    #2 bisco, Feb 17, 2026 at 2:57 PM
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