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Running stock rear mufflers on aftermarket exhaust and tune

Discussion in 'VF Holden Commodore (2013 - 2017)' started by PSISLE, Jun 13, 2018.

  1. PSISLE

    PSISLE Well-Known Member

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    Hi all, quick question. I’ve got an L77 sportwagon with Cam, full harrop 2.5inch system with 1 3/4 headers- has been dyno tuned. Sounds killer and goes like stink. Making the trek to bathurst this year from SA and I wanted to get the opinion of the educated majority that lurks in here. Would it be safe for the car/tune to install either the stock afm mufflers or even vf2 mufflers (would have to have flange mounts) just for the trip to save the ears of my passengers? I’m used to it, but fully loaded with gear, 3 blokes and small trailer- I wouldn’t want to sit in the back for 12 hours
    Thanks team JC
     
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  2. MY17DIR

    MY17DIR Active Member

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    Put a towbar on the director :D
     
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  3. VT&VX

    VT&VX Active Member

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    [​IMG]
    The engine sensors will attempt to adjust air/fuel according to the feedback it gets from the O2 in exhaust.

    If it doesn't work, then jam earplugs in them
     
  4. UTE042_NZ

    UTE042_NZ Well-Known Member

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    Put some heavy rock or metal on the stereo and turn it up to full volume for the first 2 hours. They'll be too deaf to hear the exhaust for the rest of the way.
     
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  5. Not_An_Abba_Fan

    Not_An_Abba_Fan Exhaust Guru

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    The factory rear mufflers are restrictive and will affect the flow, it won't hurt anything though, just be a bit less responsive. You may use a bit more fuel.
     
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  6. VT&VX

    VT&VX Active Member

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    If that is the case, then something like this might be easier

    [​IMG]
     
  7. PSISLE

    PSISLE Well-Known Member

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    The redline has got a towbar though ......
     
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