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VF SS Series 2 Rear Muffler with Bi Modal

Discussion in 'VF Holden Commodore (2013 - 2017)' started by clappa, Jan 7, 2019.

  1. clappa

    clappa New Member

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    Hi All,

    As the title suggests...Looking for aftermarket Rear Mufflers that can connect to the factory bi modal wiring harness.

    I think the car currently has a Hurricane Exhaust on it. i know its 3 inch.

    But cant seem to find anywhere that sell what i need, without going the full cat back, of which it has. Just really want to see if I can get the rear mufflers only with the bi modal included.
     
  2. abuch47

    abuch47 Active Member

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    Harrop advertise their rear muffler as working with factory bimodal. Have to ask if they'd sell it separate to a system.

    Varex muffler from xforce might be worth looking into but that's separate to factory bimodal.
     
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  3. PeteSS

    PeteSS Active Member

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    You do find them for sale from time to time on Ebay. usually around the $250 to $300 mark.

    Assuming you want to quieten it down ? Bear in mind that the factory bi modals when fitted to an aftermarket system can be very loud when the bimodal is open
     
  4. abuch47

    abuch47 Active Member

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    Also if you get the factory bimodal valve you can get someone to cut and weld it into any muffler.

    Like Pete said eBay or gum tree.
    F2 sedan
    F sedan
    HPW have a few
     
  5. [paradox]

    [paradox] Active Member

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    this is pretty much what happens with any aftermarket system looking to retain bi-modal with mylink.

    As stated your other option is xforce varex, there is no interface to mylink,
    but they do have a smartbox you can configure to behave the same, which connects to the OBD port.
     
  6. clappa

    clappa New Member

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    So it looks like Harrop sell a cat back system, that integrates with the factory evalve.
    The other option I am waiting on, is a performance shop in Melb has a supplier they can get these from, but are currently out of stock.
     
  7. [paradox]

    [paradox] Active Member

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    otherwise if you just want other aftermarket ones with remote theres this mentioned in the other thread

    VF bimodal pin diagram
     
  8. clappa

    clappa New Member

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    ah ok thanks. The other option i am looking at is getting a second hand set of rear mufflers, and cutting the valves out and getting someone to weld into my aftermarket mufflers. That way its all plug and play.
     
  9. PeteSS

    PeteSS Active Member

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    \

    Be careful though. I was going to do this with the 3 inch Pacemaker mufflers mine originally came with, though when we covered one of the tips it made little difference to the loudness.

    The factory bi modal mufflers were designed to be just that...........bimodal Aftermarket ones not so much
     
  10. clappa

    clappa New Member

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    Hmmm...Thanks. I tried covering them yesterday, and it did make a difference.. Will try it out. Got the bimodal on order now, and found a place to weld them in. For a few hundred bucks, it wont break the bank but will post back in here in a couple of weeks once done.
     
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  11. clappa

    clappa New Member

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    So for those interested. Got the original bimodals fitted. Unfortunately, the relay is missing which I only found out this afternoon. So still not sure whether it works.
    Holden don’t have any relays. Ordered some from eBay but are a week or so away.
    Anyone know where in Sydney I can get one from?
     
  12. clappa

    clappa New Member

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    So for those interested in an update.
    Got the relay sent from the USA. Needed 1, but got 3. So have 2 spare if anyone needs one.
    Bimodal is all working now, and there is a noticeable difference which is great. Next big test is doing a freeway run and seeing if the drone is gone.
    I think all up, it cost me $420 to do, including the original mufflers, welding and the relays. Well worth it IMHO.
     
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  13. Skylarking

    Skylarking Well-Known Member

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    I’ve read such on the forums related to other spare parts. It’s not like people want parts for a 20 year old car. Such lack of spare parts does not bode well for keeping our cars on the road going forward :(
     
  14. VS 5.0

    VS 5.0 Well-Known Member

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    Doesn't the law require them to have spare parts available for at least 7 years ?
     
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  15. Anthony121

    Anthony121 Well-Known Member

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    For some reason that particular relay (part 13500128) is not listed in the VF range but is used for Bi-modal exhaust relay. That part is used on a number of Holden vehicles and is available to purchase.
     
  16. PeteSS

    PeteSS Active Member

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    On start up i assume the bimodals are open, then shut when the revs drop. Even if you have them on quiet mode ?
     
  17. clappa

    clappa New Member

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    Interesting..As a number of Holden dealers said Holden dont make that part anymore, even when i quoted just the part number and not specifically related to the VF.
     
  18. clappa

    clappa New Member

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    No idea but this morning it seemed shut straight away.
     
  19. Anthony121

    Anthony121 Well-Known Member

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    They are talking **** as they are still being imported
     
  20. monty_vfssv

    monty_vfssv Active Member

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    yes they are spring loaded to the open position, once the car fires in quite mode they close fairly quickly within a second or two.
     

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