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[LS1] Replacing mufflers with hotdogs

Discussion in 'V8 Development and Modification' started by Blaizen82, Aug 13, 2017.

  1. Blaizen82

    Blaizen82 New Member

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    Hey, I have put the HSV exhaust off a VU Maloo on my VX SS. It does run better but it's so quiet... I don't know much bout exhausts, but I want to know if I replaced the 2 mufflers with hotdogs, should the hotdogs be in the middle where the mufflers were, then go 2 pipes into 1 with a single muffler at the tailpipe or run the pipe straight through and have the hotdogs further down. I want it to have the sound it's got and run as nice, but I wanna hear it much louder than it is. Like a V8 should be...
     
  2. lowandslow

    lowandslow Well-Known Member

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    By the time you go buying mufflers and having someone weld them in and muck about, you could buy a cheapo x-force system and be done with it.
     
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  3. Aussie XB12SS

    Aussie XB12SS Member

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    Yep I know from experience & my missus reminding me..................
    Had a custom twin system put on mine with hi flow cats, hi flow mufflers & talked into hotdogs in place of the rear resonators. Ended up going to another shop to have the hot dogs taken off as I couldn't sneak around town.
    Get fined once for noise & you never forget.

    Not sure if this link will work but it's mine before I took the hotdogs off.
    https://forums.justcommodores.com.au/threads/vu-ss-fifty.256140/page-4#post-2900527
     
    Last edited: Aug 13, 2017
  4. Blaizen82

    Blaizen82 New Member

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    I'll weld em in and do it all myself...
     
  5. harrop.senator

    harrop.senator Well-Known Member

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    Resonators and hotdogs are same thing...

    Two 12" hotties and a decent non completely straight through muffler should be adequate.

    But two mufflers in the middle and a single hotdog at the rear will be quieter but note may be nicer theirs fair few arguments that placing the resonator at the end of the pipe does more then in the middle. Never tried it back to back on cars to know.
     
  6. Tonner Matt

    Tonner Matt Well-Known Member

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    Is the Maloo exhaust you fitted a factory exhaust or aftermarket system.
    For just an increase in noise I'd replace the 2 factory centre mufflers with hotdogs and leave the rear muffler in place.
    Will be a reasonably cheap modification to do and it should have the desired effect you are after
     
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  7. Blaizen82

    Blaizen82 New Member

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    Thankyou! That's exactly wat I needed to know! Awsome! Thanks heaps, yea I'll keep the single rear muffler n swap out the two centre mufflers! And that won't effect the performance? Just increase the sound right? Cheers bro.
     
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  8. Tonner Matt

    Tonner Matt Well-Known Member

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    You will get an increase in sound by just replacing the standard centre mufflers with hotdogs.
    And a bit more increase in noise again if you replaced the standard rear muffler with a more free flowing one if it isn't loud enough for you.
    But definitely keep a rear muffler on it, without one it will be too loud and cop bait for a defect notice.
    Doing this won't hurt the performance of the car, if anything you may feel a slight increase in performance from removing the restrictive standard centre mufflers.
    People often say it's a placebo effect "because you can actually hear the exhaust now & it feels like it goes harder". But at the end of the day who cares, it's your car and if you are happy with the outcome that's all that should matter.
     
  9. Tonner Matt

    Tonner Matt Well-Known Member

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    Here are a couple of pics of my Manta 2 1/2" stainless twin system on my VZ 1 Tonner.
    Dual hotdogs in the centre and a free flowing rear muffler.

    DSCN0636 (2).JPG DSCN0627 (2).JPG
     
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  10. Blaizen82

    Blaizen82 New Member

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    Awsome! Thanks heaps... yea I don't want it stupid loud... just exactly how u said... that's perfect! Ur a bloody champion! Thankyou
     
  11. Not_An_Abba_Fan

    Not_An_Abba_Fan Exhaust Guru

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    FYI, factory systems have a muffler with reverse flow on the rear and the two front ones are actually straight through. Replacing them with hotdogs will make it slightly louder, but not by much, because the smaller the body of the muffler, the louder it will be. For an end result that is louder than that, replace the rear muffler with a straight through one of similar size, the front straight through mufflers will take out the drone, but removing the restrictive rear muffler will free up the exhaust and make it louder as well as giving it a bit more go.
     
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  12. ar5boosted

    ar5boosted New Member

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    I'm a Commodore noob but I for one reason or another I was asking about this today at a Muffler Shop.

    Apparently, when it's done with a Tune that's when you get the best result.

    The Exhaust guy was telling me that there used to be a guy that would upload a tune for $200 to correspond to the Exhaust mods. However that guy never let on the details of what he actually did and then did a runner and left the State.

    I'd love to find out how we can do this again. I want my car done the same.

    On my non-commodore removing the rear-muffler *did* make a lot of difference whilst leaving the centre resonators in. So a +1 from me and the Exhaust shop on doing it that way.
     
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  13. Blaizen82

    Blaizen82 New Member

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    Yea, I decided to go with the cats up front then replaced the two centre mufflers with the hotdogs and ran it straight thru with twin pipes to the rear. My VT SS has this set up and it sounds awsome and is sweet performance wise... so I figured I'd do the same on my VX SS. I'll let u know how it turns out... I've actually got a Launch computer to tune it all anyway... but shouldn't need to I don't think...
     
  14. aussie vk 202

    aussie vk 202 New Member

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    how did it go ?
     
  15. mpower

    mpower Well-Known Member

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    you know this thread is over a year old?
     

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