A4 (B5 Platform) Discussion Discussion forum for the B5 Audi A4 produced from 1995-2001 B5 FAQ

APR STAGE3 CAT PROBLEMS 3RD TIME!!!

Thread Tools
 
Search this Thread
 
Old Jun 19, 2006 | 10:11 AM
  #1  
porsches4ed (APR S3)'s Avatar
Thread Starter
AudiWorld Senior Member
 
Joined: Aug 2001
Posts: 1,095
Likes: 3
Default APR STAGE3 CAT PROBLEMS 3RD TIME!!!

here we go again, Been getting catalyst system bank 1 eff. below threshold. The other times I kept getting this code my cat was cracked. The last time I had it welded, the guy who did it said it would crack again because the quality of steel is the cheapest kind.

<img src="http://pictureposter.audiworld.com/24446/dsc02471.jpg">


I thought it would hold but it cracked again Am I the only one with this problem?


<img src="http://pictureposter.audiworld.com/24446/dsc02473.jpg">

This was the last one, it completely cracked off. I have the RS4 mounts and they are not blown. My exhaust has a flex pipe at the downpipe. This is getting annoying. There has to be other people with the same problem. I have had stage3 for like 14 months now and this will be the 3rd cat that has cracked, they are all on the turbo flange too. I am thinking they need a V band cat.
Reply
Old Jun 19, 2006 | 10:12 AM
  #2  
AutoXJunkie (Justin)'s Avatar
Senior Member
 
Joined: Mar 2004
Posts: 7,189
Likes: 0
Default

go for the test pipe...
Reply
Old Jun 19, 2006 | 10:15 AM
  #3  
Audone's Avatar
Junior Member
 
Joined: Apr 2001
Posts: 3,095
Likes: 0
Default I relocatted my cat under the car and hadnt had any problems..

Are you on the other forum? Might want to check there for advice...
Reply
Old Jun 19, 2006 | 10:18 AM
  #4  
beejohn's Avatar
AudiWorld Super User
 
Joined: Dec 2004
Posts: 3,589
Likes: 0
Default

2nd.. see if you can order a flange and get a 3" pipe welded to it from an exhaust shop
Reply
Old Jun 19, 2006 | 10:20 AM
  #5  
WJM's Avatar
WJM
AudiWorld Super User
Tech Guru
 
Joined: Mar 2000
Posts: 13,474
Likes: 1
Default

same problem exists there
Reply
Old Jun 19, 2006 | 10:21 AM
  #6  
WJM's Avatar
WJM
AudiWorld Super User
Tech Guru
 
Joined: Mar 2000
Posts: 13,474
Likes: 1
Default any advice/pics/how-to's on that?

I would appreciate if you could post something. I am looking to do this soon. You can post it on the other forum if you like.
Reply
Old Jun 19, 2006 | 10:34 AM
  #7  
porsches4ed (APR S3)'s Avatar
Thread Starter
AudiWorld Senior Member
 
Joined: Aug 2001
Posts: 1,095
Likes: 3
Default Im gonna get the ATP turbo vband flange

<img src="http://www.atpturbo.com/Merchant2/graphics/00000001/Catalog%20Images/Flanges/Steel/fls023-c.jpg">

I wll have to get the cat pipe with o2 sensors custom made

<img src="http://www.atpturbo.com/Merchant2/graphics/00000001/Catalog%20Images/Flanges/Steel/fls023-d.jpg">

Its $95.00 for the flange
<img src="http://www.atpturbo.com/Merchant2/graphics/00000001/Catalog%20Images/Flanges/Steel/fls023-001.jpg">
Then Ill just get the Vband put on the cat -Random Technology- one that comes with the APR kit. ATP's cat delete pipe is $395 but the orientation of the turbo is different from what they tell me. The manifold they use has the turbo sitting higher on the engine.
Reply
Old Jun 19, 2006 | 10:58 AM
  #8  
WJM's Avatar
WJM
AudiWorld Super User
Tech Guru
 
Joined: Mar 2000
Posts: 13,474
Likes: 1
Default

see the other forum, it was discussed recently, and you can have the cat made up with that
Reply
AudiWorld Stories

Bringing Audi to Life for Audi Fans

story-0

New Audi A6 Allroad Is The Market's Coolest Wagon: 9 Things to Know

 Pouria Savadkouei
story-1

10 Strangest Audi Designs That Actually Made Production

 Joe Kucinski
story-2

2027 Audi Q7 and SQ7: Audi Upgraded EVERYTHING!

 Michael S. Palmer
story-3

Audi Unveils Absurdly Cool New Supercar: 10 Things You Need to Know!

 Verdad Gallardo
story-4

The Highs & Lows of Every Audi C-Class Generation

 Joe Kucinski
story-5

Top 10 Most Expensive Audis Ever Sold on Bring-A-Trailer

 Brett Foote
story-6

10 Audi Features & Options We Miss the Most!

 Joe Kucinski
story-7

Audi Recreates Crazy-Looking Speed Record Breaker From 1935

 Verdad Gallardo
story-8

Coachbuilder Recreates the 1995 Audi TTS Concept

 Verdad Gallardo
story-9

Every Audi V10 Car Ranked!

 Joe Kucinski
Old Jun 19, 2006 | 11:43 AM
  #9  
DUBITUP's Avatar
AudiWorld Super User
 
Joined: Apr 2003
Posts: 7,666
Likes: 9
Default Just had my Test pipe fail, same problem with the weld breaking. There i sjust not enough

material to weld that flange on so taht it will not fail.
Reply
Old Jun 19, 2006 | 11:45 AM
  #10  
DUBITUP's Avatar
AudiWorld Super User
 
Joined: Apr 2003
Posts: 7,666
Likes: 9
Default Look at my posts in the under Emissions help in the "other" forum

I relocated the cat under the car, no pics but a decent description
Reply



All times are GMT -8. The time now is 03:16 AM.

story-0
New Audi A6 Allroad Is The Market's Coolest Wagon: 9 Things to Know

Slideshow: Audi's latest A6 Allroad gets RS-style fenders, real off-road hardware, and enough personality to stand out in a market obsessed with crossovers.

By Pouria Savadkouei | 2026-06-16 17:31:52


VIEW MORE
story-1
10 Strangest Audi Designs That Actually Made Production

Slideshow: 10 strangest Audi designs that actually made production

By Joe Kucinski | 2026-06-10 16:32:29


VIEW MORE
story-2
2027 Audi Q7 and SQ7: Audi Upgraded EVERYTHING!

Slideshow: Everything you need to know about the 2027 Audi Q7 and SQ7

By Michael S. Palmer | 2026-06-09 06:02:56


VIEW MORE
story-3
Audi Unveils Absurdly Cool New Supercar: 10 Things You Need to Know!

Slideshow: Limited to just 499 units, the 987-horsepower halo car signals a new chapter for Audi performance.

By Verdad Gallardo | 2026-06-04 17:37:15


VIEW MORE
story-4
The Highs & Lows of Every Audi C-Class Generation

Slideshow: The highs and lows of every Audi C-Class generation.

By Joe Kucinski | 2026-05-27 16:05:50


VIEW MORE
story-5
Top 10 Most Expensive Audis Ever Sold on Bring-A-Trailer

People were more than happy to shell out big bucks for these cars.

By Brett Foote | 2026-05-27 15:32:23


VIEW MORE
story-6
10 Audi Features & Options We Miss the Most!

Slideshow: 10 Audi features and options we miss the most.

By Joe Kucinski | 2026-05-12 19:33:47


VIEW MORE
story-7
Audi Recreates Crazy-Looking Speed Record Breaker From 1935

Slideshow: Audi has recreated one of the wildest machines of the pre-war speed-record era, reviving a streamlined V16 racer that originally exceeded 200 mph in 1935.

By Verdad Gallardo | 2026-05-11 09:49:34


VIEW MORE
story-8
Coachbuilder Recreates the 1995 Audi TTS Concept

Slideshow: A Dutch coachbuilder has reimagined the original Audi TT by finishing what the 1995 concept only hinted at.

By Verdad Gallardo | 2026-05-05 15:17:58


VIEW MORE
story-9
Every Audi V10 Car Ranked!

Slideshow: Ranking every Audi V10 road car

By Joe Kucinski | 2026-04-29 16:11:56


VIEW MORE