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

3" Downpipe Guide - would it be useful for anyone?

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

  1. Welly

    Welly VX220 SC Driver :)

    Joined:
    Aug 5, 2009
    Messages:
    10,699
    Likes Received:
    122
    Yo yo all,

    I am test fitting a 3" downpipe at some point over the next 2 weeks on an OEM car. (How pleased I am - NOT)

    I can photograph it all and document it if anyone thinks it would be useful for them?

    Let me know...
     
    deeman88 likes this.
  2. Google AdSense Guest Advertisement



    to hide this advert.
  3. Westy

    Westy Double Dark Side! Diesel & 8P

    Joined:
    Dec 2, 2008
    Messages:
    17,377
    Likes Received:
    1,014
    Yes please mate. If I get a 3" TIP next weekend I will soon want 3 inches on the otherside too ;) Is this the XS power one by any chance?

    Depending on what Bills diags show for my exhaust system (as its not right) I might be purchasing a 3" downpipe soon.
     
  4. cecilthesausage

    cecilthesausage ...It's Never Finished...

    Joined:
    Jul 20, 2010
    Messages:
    933
    Likes Received:
    112
    Yep this would be very useful mate... Is it the Xs Power one Welly ?
     
  5. Dane

    Dane Had an 8L S3, a B5 RS4 now I have a B8 S4

    Joined:
    Nov 11, 2009
    Messages:
    4,050
    Likes Received:
    150
    Defo useful, but i'm gonna get Bill to fit mine as I will probably end up fitting it upside down If i do it. :laugh:
     
  6. Welly

    Welly VX220 SC Driver :)

    Joined:
    Aug 5, 2009
    Messages:
    10,699
    Likes Received:
    122
    I can neither confirm nor deny this.... It is simply 'a' 3" downpipe.

    :whistle2:
     
  7. Hadders

    Hadders Member

    Joined:
    Jun 1, 2009
    Messages:
    134
    Likes Received:
    0
    I'm paying attention :yes:
     
  8. Westy

    Westy Double Dark Side! Diesel & 8P

    Joined:
    Dec 2, 2008
    Messages:
    17,377
    Likes Received:
    1,014
    I'll be having a crack at it myself. Much more satisfaction that way ;)
     
  9. cecilthesausage

    cecilthesausage ...It's Never Finished...

    Joined:
    Jul 20, 2010
    Messages:
    933
    Likes Received:
    112
    Haha:icon_thumright:
     
  10. superkarl

    superkarl MAN OF STEEL

    Joined:
    Mar 28, 2010
    Messages:
    8,545
    Likes Received:
    1,751
    definately useful, I've weighed it up numerous times and I'm still unsure which angle and where to attack it from given the lack of space. Can't be easy
     
  11. Dane

    Dane Had an 8L S3, a B5 RS4 now I have a B8 S4

    Joined:
    Nov 11, 2009
    Messages:
    4,050
    Likes Received:
    150
    I would, but thus far I've pretty much got something wrong every time, which then ends up costing to put right lol, plus Bill has ramps which I imagine will make installation a bit easier.
    Big +1 for doing it yourself but I'm just not well versed enough at the mo.
     
  12. Westy

    Westy Double Dark Side! Diesel & 8P

    Joined:
    Dec 2, 2008
    Messages:
    17,377
    Likes Received:
    1,014
    Can you also time how long it takes too Welly. The amount of times I've looked at guides and it looks easy then I start the job and I'm still doing it 4 hours later!
     
  13. SiGainey

    SiGainey Member

    Joined:
    Sep 29, 2003
    Messages:
    488
    Likes Received:
    4
    Yep, would be very useful if you could do a guide!
     
  14. S3 Nattie

    S3 Nattie Quattro ist für sissies

    Joined:
    May 19, 2009
    Messages:
    1,599
    Likes Received:
    7
    Be interesting to see how you get the OEM downpipe out because when I was doing mine it was a MASSIVE pain in the ass getting it out lol.

    I have 2 very good guides that I used when i was doing mine if anyone wants them or post a link.
     
  15. Westy

    Westy Double Dark Side! Diesel & 8P

    Joined:
    Dec 2, 2008
    Messages:
    17,377
    Likes Received:
    1,014
    Post up what you've got Nath and we'll take a look.
     
  16. S3 Nattie

    S3 Nattie Quattro ist für sissies

    Joined:
    May 19, 2009
    Messages:
    1,599
    Likes Received:
    7
    Ok mate, when i get home il post them up for you.
     
  17. [Dave B]

    [Dave B] Daddy

    Joined:
    Jan 3, 2003
    Messages:
    2,025
    Likes Received:
    141
    In a word - YES.
     
  18. JS1500

    JS1500 Howdy

    Joined:
    Sep 28, 2009
    Messages:
    1,167
    Likes Received:
    9
    T'would be oarsum.
    Welly, Angel of the 8L.
     
  19. Welly

    Welly VX220 SC Driver :)

    Joined:
    Aug 5, 2009
    Messages:
    10,699
    Likes Received:
    122
    It is that. Three options for getting it out IMO.

    Option 1. Drop the subframe to allow more room to pass it through. This is quite commonly done. Mark the subframe's location before hand to align back up somewhere close.

    Option 2. Drop the front end of the prop off of the transfer box. Not an easy task, how ever is possible. This is how I did mine.

    Option 3. Cut the original into 2 pieces whilst fitted and remove.
     
  20. S3 Nattie

    S3 Nattie Quattro ist für sissies

    Joined:
    May 19, 2009
    Messages:
    1,599
    Likes Received:
    7
    I done option 1 and 3 but cut it into 3 parts I think and still was an ass, I was doing it on my drive too though. Once the subframe was dropped and the downpipe cut into 3 parts the flange didnt want to come around the prop, come out in the end though. Would be a good idea to take the OSF driveshaft out too for space. Would you really need to mark the subframe position as it only goes back on in one position.

    Getting the new one on is simple compared to taking the old one out. Fair play to you welly for doing it again, I never want to take an S3 OEM downpipe off again inless I have a ramp.
     
    #19 S3 Nattie, Mar 10, 2011
    Last edited: Mar 10, 2011
  21. superkarl

    superkarl MAN OF STEEL

    Joined:
    Mar 28, 2010
    Messages:
    8,545
    Likes Received:
    1,751
    Now you've worried me welly, I dropped my subframe the other night to fit a steering rack Bush and didn't mark anything, had no idea there was any alignment, just four simple bolts n goles. Uh oh.




    P.s. Boats n hoes
     
  22. Google AdSense Guest Advertisement



    to hide this advert.
  23. Westy

    Westy Double Dark Side! Diesel & 8P

    Joined:
    Dec 2, 2008
    Messages:
    17,377
    Likes Received:
    1,014
    I wouldn't worry too much mate as i'm assuming you'll be getting a 4 wheel alignment done once you've finished changing all the suspension bushes? Whoever does that for you will get it all straight again ;)
     
  24. S3 Nattie

    S3 Nattie Quattro ist für sissies

    Joined:
    May 19, 2009
    Messages:
    1,599
    Likes Received:
    7
    I didnt mark anything either as it only goes back on in one position. Only mark the balljoints when ever I change them
     
  25. Welly

    Welly VX220 SC Driver :)

    Joined:
    Aug 5, 2009
    Messages:
    10,699
    Likes Received:
    122
    Exactly - as long as she drive straight for now then all will probably be well. Just get the wheel alignment checked at some point.
     
  26. superkarl

    superkarl MAN OF STEEL

    Joined:
    Mar 28, 2010
    Messages:
    8,545
    Likes Received:
    1,751
    Yeh I thought that, but my mission was to get it straight as poss so I can drive it to awesome. Ahhh well, all over the road il be
     
  27. Welly

    Welly VX220 SC Driver :)

    Joined:
    Aug 5, 2009
    Messages:
    10,699
    Likes Received:
    122
    LOL, the funny thing is I don't even need one. I'm only doing this so that everyone can buy one as they will actually fit...

    A sucker for punishment.
     
  28. Welly

    Welly VX220 SC Driver :)

    Joined:
    Aug 5, 2009
    Messages:
    10,699
    Likes Received:
    122
    No, there is movement in the frame when unbolted - not much, but it is likely to move when dropped.
     
  29. superkarl

    superkarl MAN OF STEEL

    Joined:
    Mar 28, 2010
    Messages:
    8,545
    Likes Received:
    1,751
    So how long till the group buy on the xs power items welly? The threads closing end of March isn't it?
     
  30. Westy

    Westy Double Dark Side! Diesel & 8P

    Joined:
    Dec 2, 2008
    Messages:
    17,377
    Likes Received:
    1,014
    You rock son ;)
     
  31. Super Josh

    Super Josh New Member

    Joined:
    Jun 14, 2009
    Messages:
    4
    Likes Received:
    0
    If it is an XS power one then a few peeps on the TT forum have fitted them and apart from the turbo bolt holes needing to be enlarged and the corner of the flange grinding down to allow them to fit they all failed to pass the emissions test at MOT time :(

    Josh
     
  32. superkarl

    superkarl MAN OF STEEL

    Joined:
    Mar 28, 2010
    Messages:
    8,545
    Likes Received:
    1,751
    Seriously top bloke!
     
  33. Westy

    Westy Double Dark Side! Diesel & 8P

    Joined:
    Dec 2, 2008
    Messages:
    17,377
    Likes Received:
    1,014
    Welly has been working with them to sort out the above issues so fingers crossed.
     
  34. Welly

    Welly VX220 SC Driver :)

    Joined:
    Aug 5, 2009
    Messages:
    10,699
    Likes Received:
    122
    Yeah, that was only an interest gauger though. Once I have seen the revised item, and it's been analysed then we can kick that off.

    Shouldn't be too long though, lets put it that way.
     
  35. S3 Nattie

    S3 Nattie Quattro ist für sissies

    Joined:
    May 19, 2009
    Messages:
    1,599
    Likes Received:
    7
    I didnt mean when Its unbolted, it does have quite a bit of movement once unbolted and dropped. I mean you cannot slide the subframe on the bolts or anything like you can with the balljoint in the wishbone for adjustment.
     
  36. Welly

    Welly VX220 SC Driver :)

    Joined:
    Aug 5, 2009
    Messages:
    10,699
    Likes Received:
    122
    Ahhh right, with you now - sorry dude. No, it doesn't move like that, although it will come forwards and backwards small amounts even when the bolts are slackened, and this is enough to throw the geometry out annoyingly.
     
  37. S3 Nattie

    S3 Nattie Quattro ist für sissies

    Joined:
    May 19, 2009
    Messages:
    1,599
    Likes Received:
    7
    Ye it is the same, they dont pass from what I have read and experienced myself, want to see if anyone passes on here once they get theres from the group buy. Mine rusted to ***** too after 4 month or so, worse than my 8 year old OEM cat back.

    Welly, next time you talk to XS could you ask them why the lambda hole on the cats have been blanked up so the 2nd lambda gets no exhaust gases on it so you get a fault code on a sports cat.
     
  38. Welly

    Welly VX220 SC Driver :)

    Joined:
    Aug 5, 2009
    Messages:
    10,699
    Likes Received:
    122
    Yeah, can do, and have in the past. :salute:
     
  39. S3 Nattie

    S3 Nattie Quattro ist für sissies

    Joined:
    May 19, 2009
    Messages:
    1,599
    Likes Received:
    7
    Cheer dude. I was thinking they know there cats wont pass and just blanked the hole up, dont know why they blank them up for. Shouldnt get a fault code on a sports cat really.
     
  40. Welly

    Welly VX220 SC Driver :)

    Joined:
    Aug 5, 2009
    Messages:
    10,699
    Likes Received:
    122
    To be fair, I believe the logic was this:

    Pre facelift S3 don't have a post cat lambda at all. So they set the downpipe up that way. It has the thread for the post cat lambda if you have one, however if you don't then the thing will need to be drilled.

    I agree that it's not ideal - The simplest option being to prove a screw in lambda bung.
     
  41. S3 Nattie

    S3 Nattie Quattro ist für sissies

    Joined:
    May 19, 2009
    Messages:
    1,599
    Likes Received:
    7
    Does make sense if it was designed for a pre facelift. Just annoying having a sports cat and getting a fault code.

    The lambda hole on mine is about 2 inch deep and blanked off at the end so even if the hole was drilled out the lambda probe will still not get no gases flowing over it as its about an inch long maybe the probe so brings up the fault code.
     
  42. Welly

    Welly VX220 SC Driver :)

    Joined:
    Aug 5, 2009
    Messages:
    10,699
    Likes Received:
    122
    Don't get me wrong dude, I totally agree with you, and it has come up in conversation before. I've passed on the info about the cats to the relevant parties.
     

Share This Page