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Intake resonator bladder delete?

Discussion in 'Gen 4 Prius Accessories and Modifications' started by Indiana Dave, Sep 22, 2019.

  1. Indiana Dave

    Indiana Dave Junior Member

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    I'd enjoy a little intake growl.
    What will happen if I remove the intake resonator bladders and leave the stock air filter.
    Thanks for your thoughts ...
     
  2. ChapmanF

    ChapmanF Senior Member

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    You'll succeed in diverting some power from your wheels and using it to make a cool noise.
     
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  3. Indiana Dave

    Indiana Dave Junior Member

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    Ok


    OK, I did it. Removed everything to the stock intake air filter box. Also removed the charcoal filter.

    At last I have something to listen to when I punch it.

    Drove 30 miles ,,,
    nice acceleration sound.
    Seems to have more torque
    Mileage was not effected, seems it's normal 70 +or -.

    Took a look at stock muffler and getting a deep tone might be a challenge. Any experience out there ?
     
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  4. alanclarkeau

    alanclarkeau Senior Member

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    I wouldn't be playing with it. The Mass Airflow Meter and sensor(s) likely depend on them in place, unless you know how to re-map them.

    The charcoal filter is an emissions requirement and definitely shouldn't be removed.

    upload_2019-9-23_9-55-2.png

    With the muffler, it incorporates a 2 way exhaust system, so that would need to be kept in mind with a replacement.
     
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  5. bisco

    bisco cookie crumbler

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    i think mustang just uses piped in music, much easier
     
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  6. Mendel Leisk

    Mendel Leisk EGR Fanatic

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    I don't think it'll hurt, removing everything up to the air filter. Not my cup of tea though.
     
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  7. alanclarkeau

    alanclarkeau Senior Member

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    Except that the Mass Airflow Meter is calibrated for the environment it's in, as is the Temperature sensor in there too. Besides the legality - not sure if his state does emissions checks?
     
  8. Mendel Leisk

    Mendel Leisk EGR Fanatic

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    MAF sensor is downstream of the engine air filter, so would removal of the intake air snorkel/resonator matter? Not sure.

    Is there an intake air temp sensor? I know on 3rd gen there's a ambient air temp sensor, down low, in front of the radiator and AC evaporator. But that's nowhere near the intake air circuit.

    Still, I'd see no reason to do something like this.
     
  9. ChapmanF

    ChapmanF Senior Member

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    There is; it's built into the MAF sensor. Really, it's the part of the MAF sensor that's easy to see. You have to peer into it really hard to see the wires used for sensing the actual MAF. :)

    I don't see that as a problem, though. I don't really expect the OP is going to hurt anything much, just lose the benefit of having the resonators helping force charge into the cylinders when the valves open.

    The sound will be nice and growly though.
     
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  10. alanclarkeau

    alanclarkeau Senior Member

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    MAF sensor is in the Filter casing, and the baffles, I would assume would be to direct air around it and the Temp sensor (yes there is one).

    upload_2019-9-23_17-6-33.png

    The Charcoal filter may not affect the running - but is there for compliance reasons.
     
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  11. kithmo

    kithmo Couch Potato

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    The MAF meter should sort itself out regardless of what's before it.
     
  12. alanclarkeau

    alanclarkeau Senior Member

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    I thought I'd posted this too - sorry:
    upload_2019-9-23_23-5-44.png
     
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  13. Mambo Dave

    Mambo Dave Active Member

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    My thoughts are that you've strayed, or been misled, by the small-car fanboys a little too much.
     
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