1. This site uses cookies. By continuing to use this site, you are agreeing to our use of cookies. Learn More.

S3 custom exhaust question

Discussion in 'A3/S3 Forum (8L Chassis)' started by leeds_182, Oct 10, 2011.

  1. leeds_182
    Offline

    leeds_182 Member

    Joined:
    Aug 11, 2010
    Messages:
    121
    Likes Received:
    0
    Is it worth doing? I like the s3 but feel that it needs a little bit more noise when driving. I've obviously seen the miltek but it seems a lot of money and I could get a custom one for a bit cheaper. I'm sure a lot of r and d went into the miltek but at the end of the day it's just a piece of pipe.......

    Thanks in anticipation.
    #1
  2. DJ_Troopa
    Offline

    DJ_Troopa K1 Driver

    Joined:
    Oct 30, 2008
    Messages:
    1,741
    Likes Received:
    13
    Custom Longlife exhaust here. Had it 2 years no problems!
    #2
  3. leeds_182
    Offline

    leeds_182 Member

    Joined:
    Aug 11, 2010
    Messages:
    121
    Likes Received:
    0
    Thanks. Is there any benefit from decatting or best to go cat back?
    #3
  4. DJ_Troopa
    Offline

    DJ_Troopa K1 Driver

    Joined:
    Oct 30, 2008
    Messages:
    1,741
    Likes Received:
    13
    De-cat would flow better yes but it's illegal and you would fail an MOT straight away. I've got a 200 cell sports cat, you should go for that instead.
    #4
  5. DaveA3
    Offline

    DaveA3 Audi A-Trizzle!

    Joined:
    Feb 25, 2010
    Messages:
    2,374
    Likes Received:
    14
    +1had it for a year and its been perfect
    #5
  6. leeds_182
    Offline

    leeds_182 Member

    Joined:
    Aug 11, 2010
    Messages:
    121
    Likes Received:
    0
    Thanks for the replies. Had decats on previous cars and has caused problems with running in the past. I'll probably go cat back and look at a sports cat at a later date.
    #6
  7. DJ_Troopa
    Offline

    DJ_Troopa K1 Driver

    Joined:
    Oct 30, 2008
    Messages:
    1,741
    Likes Received:
    13
    If you're getting a cat back you might aswell just get the 200 cell sports cat while you're at it and do it in 1 go. Luckily Longlife do a 200 cell sports cat so everything was done at the same time.
    #7
  8. leeds_182
    Offline

    leeds_182 Member

    Joined:
    Aug 11, 2010
    Messages:
    121
    Likes Received:
    0
    What diameter is yours mate? 2.75"?
    #8
  9. DJ_Troopa
    Offline

    DJ_Troopa K1 Driver

    Joined:
    Oct 30, 2008
    Messages:
    1,741
    Likes Received:
    13
    Starts off as 3" and after the centre box it reduces to 2.5" as it's really tight for clearance underneath the car!
    #9
  10. leeds_182
    Offline

    leeds_182 Member

    Joined:
    Aug 11, 2010
    Messages:
    121
    Likes Received:
    0
    Just been quoted £550 for a 2.75" system including sports cat so quite a bit cheaper then miltek! Not from long life though, still waiting for them to get back to me.
    #10
  11. Dani_B19
    Offline

    Dani_B19 Audi-sports own special child.

    Joined:
    Nov 9, 2008
    Messages:
    7,275
    Likes Received:
    90
    If going custom dont mess about with 2.75, you might aswell go the whole hog and get 3".
    #11
  12. leeds_182
    Offline

    leeds_182 Member

    Joined:
    Aug 11, 2010
    Messages:
    121
    Likes Received:
    0
    Thanks for the reply. I'm not planning big power and have heard that too bigger bore can cause back pressure issues?
    #12
  13. Dani_B19
    Offline

    Dani_B19 Audi-sports own special child.

    Joined:
    Nov 9, 2008
    Messages:
    7,275
    Likes Received:
    90
    Youve been informed wron mate. Thats only relevant to n/a engines, turbos dont need back pressure, tbh any exhaust setup on a turbo is a restriction.
    For what it costa id just go 3".
    #13
  14. leeds_182
    Offline

    leeds_182 Member

    Joined:
    Aug 11, 2010
    Messages:
    121
    Likes Received:
    0
    I've always been an na kind of guy so that's probably where the confusion came from. Thanks for the heads up.
    #14

Share This Page