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Thread: Mirage exhaust mods summed up. (Factory setup is best)

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    Mirage exhaust mods summed up. (Factory setup is best)

    Hey guys. I am posting this to save people time, the ones who will add to their exhaust system, or remove things.

    This has been dyno prooven. There is NO gain from adding or removing anything.
    I hope this helps, I might add a chrome tip or something, then later on get the speedlab headers since they are a gain.

    Quote Originally Posted by 'speedlab'
    To everyone thinking about changing their exhaust systems, DON'T

    The stock midpipe is the correct design and changing it to bigger or smaller will result in a power loss.

    The problem with almost all shops that make fabricated exhausts is that they don't have a dyno.

    customer: lalakas ba hatak pag nagpa exhaust?
    shop: oo naman boss
    customer: gano ka lakas?
    shop: ewan basta lalakas

    lalakas sa gas is more like it because you will have to step on the gas more to get the same power before you put an exhaust.



    here's a dyno chart of a mirage that had a fabricated header and exhaust done.



    blue line: stock
    green line: speedlab intake with fabricated header and exhaust
    red line: speedlab intake and header and stock exhaust

    Notice a drastic dip in hp from 2000 all the way to 4500 (where your car spends most of the time)

    The torque loss is even more dramatic, losing 12ft-lbs at 2000 rom, resulting in a loss of hatak.

    Now as for the every present question of "what muffler should I use?" The answer is it doesn't matter, as long as it's just the end section, the size can be anywhere from 2-2.5" inlet. Mufflers add zero power BTW

    So moral of the story, disregard everything you have read in the first 9 pages of this thread, do not change the midpipe, do not change the resonator The proof is right here



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    Last edited by Mistah JT; 01-19-2014 at 08:44 PM.

  2. The Following 6 Users Say Thank You to Mistah JT For This Useful Post:

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  3. #2
    Thanks for sharing, James.

        __________________________________________

        click to view fuel log View my fuel log 2014 Mirage SE 1.2 manual: 61.2 mpg (US) ... 26.0 km/L ... 3.8 L/100 km ... 73.5 mpg (Imp)


  4. The Following User Says Thank You to MetroMPG For This Useful Post:

    Mistah JT (01-19-2014)

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    Administrator Daox's Avatar
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    Ditto, thanks. Its great to see that Mitsu put some time into developing this little car and that is hard to improve on (at least in this area).
    Custom Mirage products: Cruise control kit, Glove box light, MAF sensor housing, Rear sway bar, Upper grill block

    Current project: DIY Nitrous oxide setup for ~$100

        __________________________________________

        click to view fuel log View my fuel log 2015 Mirage DE 1.2 manual: 47.2 mpg (US) ... 20.1 km/L ... 5.0 L/100 km ... 56.7 mpg (Imp)


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    Senior Member pureflipking's Avatar
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    but what about changing the resonator and muffler in terms of noise?

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    Quote Originally Posted by pureflipking View Post
    but what about changing the resonator and muffler in terms of noise?
    Will most likely result in a small loss.
    The stivo muffler loses power since it is so large.

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    Senior Member Rival Autosport's Avatar
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    Huh, imagine that.....I wonder what a muffler delete would do, and just run stock-size piping back?

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    Quote Originally Posted by RalliArt_Mirage View Post
    Huh, imagine that.....I wonder what a muffler delete would do, and just run stock-size piping back?
    They tried the resonator removed and straight piped, that lost power.
    Might not lose or gain if you delete rear muffler and replace with same size piping.

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    Senior Member Rival Autosport's Avatar
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    Quote Originally Posted by Mistah JT View Post
    They tried the resonator removed and straight piped, that lost power.
    Might not lose or gain if you delete rear muffler and replace with same size piping.
    Even that far back, eh?

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    Quote Originally Posted by RalliArt_Mirage View Post
    Even that far back, eh?
    Mitsubishi must have made the current stock exhaust so it keeps the correct back pressure so it maintains power.

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    Carmageddon m4v3r1ck's Avatar
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    I think Mitsubishi has maximised the setup for this car, except for the fact that i know they held back horsepower from the ECU. You can buy a plug-in ECU mod to unleash the power though, it will rise from 71 to 80 on 1.0L engines. Here it cost 350 euro


        __________________________________________

        click to view fuel log View my fuel log 2013 Mirage 1.0 manual: 47.5 mpg (US) ... 20.2 km/L ... 5.0 L/100 km ... 57.0 mpg (Imp)


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