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Thread: Hole in my exhaust

  1. #1
    Join Date
    Feb 2007
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    Melbourne
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    Hole in my exhaust

    Problem after problem!!!!!

    I have a hole in my exhaust, its just after the second muffler near the join. Its fairly big and you can feel it over your hole hand when the car is running.

    Im guna get the zorst place to just take off the muffler and replace it with a pipe.

    What i want to know is:
    How does a hole in the exhaust effect performance?
    How does having less mufflers effect performance?


    I have a problem that might be exhaust related. When you go full throttle the car strugles to 4k rpm and then when it gets to 4k and you are still on full throttle the reves will slowly fall untill the car backfires and/or stalls. Its all acting a bit funny latly and i havnt realy done anything to the car. I suspect its the hole in the exhaust but thats why im asking.
    MK1 GLS 3door
    A4 B7 2.0T

  2. #2
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    Jun 2005
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    Adelaide
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    Hole wouldn't cause that. Dead 02 sensor or MAF might not help either. From memory your car has a cat, hotdog and two small boxes so losing one will add 1% extra power and make slightly more noise no biggie.

    Most people just go one big box after the beam rather than two puny ones

  3. #3
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    Quote Originally Posted by evorobin View Post
    Hole wouldn't cause that. Dead 02 sensor or MAF might not help either. From memory your car has a cat, hotdog and two small boxes so losing one will add 1% extra power and make slightly more noise no biggie.

    Most people just go one big box after the beam rather than two puny ones
    The hole in the exhaust and the problem happend at about the same time, thats why i thought it could be that.

    I have a BMW MAF and have had it for a while, ill replace it with the OEM one and see if that helps.

    What do 02 sensors cost?

    Thanks mate.
    Last edited by Spyda; 28-07-2008 at 12:35 AM.
    MK1 GLS 3door
    A4 B7 2.0T

  4. #4
    Join Date
    Dec 2007
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    Ermington, Sydney
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    Hotdog is the term referring to a certain style of mufflers...they look like fart-cannons but they're the middle muffler replacement, not the backbox replacement
    Mrk Detailing, premium automotive detailing. Paint correction/protection specialist. PM me

  5. #5
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    Feb 2007
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    Melbourne
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    Where can i get a O2 Sensor from? Can i use one of a SEAT?
    MK1 GLS 3door
    A4 B7 2.0T

  6. #6
    Join Date
    Apr 2006
    Location
    Asaka-shi Saitama Japan (from Tassie)
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    if you remove the muffler and put a bit of pipe in it sounds horrid!!!.
    Carry panadol in the glovebox too!
    Cheers, Benny
    www.axesent.com.au

  7. #7
    Join Date
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    Quote Originally Posted by 86gti View Post
    if you remove the muffler and put a bit of pipe in it sounds horrid!!!.
    Carry panadol in the glovebox too!
    LOL. Already done mate. Its very very raspy, i admit it took a bit of getting used to but it grew on me. The best part is the gargle/burble when engine braking or even when you rev it and let go of the pedal.

    After about 3k rpm you cant hear it anymore, and on full throttle the air intake sound takes over inside the car and you cant hear anything apart from the bassy roar.

    IMHO thats how the GTI was suposta sound, now if it was only a bit quicker.

    Ill post a clip.
    Last edited by Spyda; 18-08-2008 at 09:50 PM.
    MK1 GLS 3door
    A4 B7 2.0T

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