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  1. #1
    edward_harris's Avatar
    s3 gone now a shiney red evo 6

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    why are s3 backboxs so big?!

    the standard s3 backbox is huge, and the milltec is the same size, why are they so big? Also has any one tried just using a can on the back like a jap car say? + All my mates who have jap cars after killing them for a bit get flames out the exhaust, and chance with the milltec or is there just to many baffles?

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  3. #2
    ash_s3's Avatar
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    Why would you want flames to come out of the back of your car Ed?
    2001 Audi S3 l MTM Remap l 252.7bhp 432.4Nm l Forge 007P l ECS Porsche Stage 2v2 Front Brake Set-up l ECS Stage 1 Rear Brake Set-up l 18" RS4 Alloy Wheels


  4. #3
    rickparmar's Avatar
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    Quote Originally Posted by ash_s3 View Post
    Why would you want flames to come out of the back of your car Ed?
    maybe he wants to cook chicken on the go
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  5. #4
    edward_harris's Avatar
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    not really that bothered about flames, just wondering why mine doesnt do it when other people running the same power to me get it in other cars?! And why is that back box so big?!

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  6. #5
    ash_s3's Avatar
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    You need a straight through exhaust to pop flames, no cat and hardly any baffles at all
    will sound ****
    2001 Audi S3 l MTM Remap l 252.7bhp 432.4Nm l Forge 007P l ECS Porsche Stage 2v2 Front Brake Set-up l ECS Stage 1 Rear Brake Set-up l 18" RS4 Alloy Wheels


  7. #6
    edward_harris's Avatar
    s3 gone now a shiney red evo 6

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    have you heard a s3 like this?

    Xbox online id - supaed133

  8. #7
    ash_s3's Avatar
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    Nope fortunately not, heard lots of saxos like it though..
    2001 Audi S3 l MTM Remap l 252.7bhp 432.4Nm l Forge 007P l ECS Porsche Stage 2v2 Front Brake Set-up l ECS Stage 1 Rear Brake Set-up l 18" RS4 Alloy Wheels


  9. #8
    S3Steve's Avatar
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    If your after a fairly loud system with a small backbox then go for the Supersprint Race system, the rear box is tiny.

    http://www.supersprint.com/homeuk.htm

    But as said if you want it to pop flames you would have to go decat too. You would also probably have to make sure your car is running quite rich on overrun
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  10. #9
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    Big back box is probs due to it having alot of baffles in it to reduce noise?

  11. #10
    Bong Water's Avatar
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    Larger back box = more baffles for lesser sound, at a guess.

    Only thing I can think of is something to do with back pressure
    Skint because of my car, the forums made me do it

  12. #11
    DPM
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    I thought you were selling your car Ed, now you want it to look like it's broken with flames shooting out the back?!
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  13. #12
    edward_harris's Avatar
    s3 gone now a shiney red evo 6

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    i am selling, just wanted to know why mine didnt flame!

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  14. #13
    DPM
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    I'd say the baffles mate and has yours still got the CAT and centre box?
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  15. #14
    grathies's Avatar
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    Usually thier overfueld and timed slightly out, so your burning unburnt fuel in the exhaust with a lickback from the combustion chamber etc

    And Im sure theres a reason why its that size, will be for decebel readings and backpressure (and a properly sized system will also help with torque)

    Im dubious about decats still, specially with all the noise regs being bought into force at tracks around the uk!

  16. #15
    edward_harris's Avatar
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    why do the a3 only have small back boxes tho? they are still quite! Yea got a jabba bullet cat, no middle box

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  17. #16
    s3_kev's Avatar
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    Quote Originally Posted by S3Steve View Post
    If your after a fairly loud system with a small backbox then go for the Supersprint Race system, the rear box is tiny.

    http://www.supersprint.com/homeuk.htm

    But as said if you want it to pop flames you would have to go decat too. You would also probably have to make sure your car is running quite rich on overrun
    that looks really cheap and nasty that stuff hope no one has ever brought it and put it on an s3

  18. #17
    Bong Water's Avatar
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    Nothing wrong with supersprint, in fact I think the supersprint alternative to the milltek system on my a4 is more expensive

    BTW, supersprint race systems are designed for track and there is no cat, mani usually connects straight to the b pipe
    Skint because of my car, the forums made me do it

  19. #18
    S3Steve's Avatar
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    Quote Originally Posted by s3_kev View Post
    that looks really cheap and nasty that stuff hope no one has ever brought it and put it on an s3
    think your a bit misguided there mate supersprint make some of the best quality exhausts available.
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  20. #19
    S3Steve's Avatar
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    Quote Originally Posted by Bong Water View Post

    BTW, supersprint race systems are designed for track and there is no cat, mani usually connects straight to the b pipe

    My mate actually had one of the race systems on his old S3 and it was from the Cat back. So perfectly suitable for the road, the biggest difference between there road and race systems is the pipe bore (63mm for the road and 70mm for the race systems iirc).
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  21. #20
    nick-barnes07's Avatar
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    i had a s3 with a straight through exhaust, from the downpipe back , and it sounded absolutely ****e, far to loud, and yes it did spit flames

  22. #21
    HTC
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    A3 boxes aren't that small either. Removed one the other day.

    The Audi systems have two silencers, so they make the rear one large as apposed to earlier cars for example. Some BMWs have only one box.

  23. #22
    Slipping at 3.5Krpm

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    Quote Originally Posted by s3_kev View Post
    that looks really cheap and nasty that stuff hope no one has ever brought it and put it on an s3
    As posted by several people above, Supersprint are WAY better than most other S3 exhaust manufacturers.

    In fact, only really blueflame sell similar quality systems.
    <Insert meaningless geeky specs here>

  24. #23
    edward_harris's Avatar
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    why do most people go for milltec over supersprint? Also on my mates m3 we cut open his back box and pulled out loads of the baffles! You think it would work on the milltec not that im thinking of doing it!

    Xbox online id - supaed133

  25. #24
    S3ren's Avatar
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    i've just got a milltek resonated exhaust fitted to my car yesterday and its alot bigger than the standard one and the centre pipe was bigger too......it sounds very nice cause its not too loud its only slightly deeper but nice.
    chips remap, milltek exhaust, eibach springs, bailey dv, neuspeed tie-bars, BBS LMs, 15mm eibach spacers, lcr front splitter

  26. #25
    Ballcrusher's Avatar
    NO CAT JUST 3" STRAIT THREW

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    my back box is small as the miltek was so heavy.




  27. #26
    bazza s3's Avatar
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    Quote Originally Posted by Ballcrusher View Post
    my back box is small as the miltek was so heavy.



    you got any clips of what that sounds like m8?

  28. #27
    Blunteh's Avatar
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    click on his sig Dufus !
    Nogaro Blue 2001 S3 - Revo Remap (Stage1) - Hyperboost DV - Neuspeed 22mm + 19mm ARBs

  29. #28
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    hahahah

    just had a listen, and IMO it#s maybe a bit too loud!

  30. #29
    bazza s3's Avatar
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    oh yea lol

  31. #30
    Slipping at 3.5Krpm

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    Sounds really loud! Sounds good, but doesnt really match the 1.8 inside the car!
    <Insert meaningless geeky specs here>

  32. #31
    S3Steve's Avatar
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    Quote Originally Posted by edward_harris View Post
    why do most people go for milltec over supersprint?
    Probably down to marketing mate, Milltek spend alot of money on advertising on VAG forums and publications, Supersprint dont seem to bother with much advertising they can sell pretty much as many exhausts as they can make purely through word of mouth and on the back of there reputation. Supersprint are also an Italian based company where as Miltek are British so you may well find a different story if polled Italian Audi owners.
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  33. #32
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    I had a supersprint on my old s3 and that spat flames...loud as f**k though!
    Beware the Standard Yellow Banana!!

  34. #33
    Donnie Mac

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    what would be the best option for best power gains but without the exhaust being much louder? any ideas? or is it pretty much impossible to upgrade the exhaust without it becoming louder? is decat worth doing?

  35. #34
    Ess_Three's Avatar
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    Quote Originally Posted by d18ony View Post
    what would be the best option for best power gains but without the exhaust being much louder?
    From my experience, you aren't going to get much of a power gain - if any - from ANY exhaust.
    Especially if the car is still on a standard turbo.

    It can be as loud as you like...but if the standard exhaust isn't restrictive (it's not) then you won't get a gain.

    I never got anything worthwhile from my Milltek exhaust & Cats (1-2 BHP and maybe a couple more lb-ft when the boost was cranked up...but that's on a good day) - dyno proven.


    any ideas? or is it pretty much impossible to upgrade the exhaust without it becoming louder?
    If you want to upgrade to get more power...it's a waste of money.

    If you want to upgrade to get a better sound...then obviously you'll get more noise. Both the Supersprint and Milltek sound good, and don't drone.


    is decat worth doing?
    Not if you are looking for power gains.
    The standard Cats aren't restrictive at around 270 BHP or less.
    Perhaps above that, you may see a bit more...but I have my doubts.


    Please note:
    The views expressed on Audi-Sport.net are the personal views of its contributors (including me), and not that of the Website or the Moderator/Administration team.

  36. #35
    1animal1's Avatar
    The Clar!! it mouves!!!

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    well thats cleared that one up.......
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  37. #36
    Bong Water's Avatar
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    Quote Originally Posted by S3Steve View Post
    My mate actually had one of the race systems on his old S3 and it was from the Cat back. So perfectly suitable for the road, the biggest difference between there road and race systems is the pipe bore (63mm for the road and 70mm for the race systems iirc).
    Ah ok, I am thinking of my Civic and the race system inc the decat
    Skint because of my car, the forums made me do it

 

 

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