A6 / S6 (C5 Platform) Discussion Discussion forum for the C5 Audi A6 and S6 produced from 1998-2004

Exhaust rattles. Suspect cats. Straight pipe??

Thread Tools
 
Search this Thread
 
Old Mar 23, 2013 | 05:34 PM
  #11  
Just Me's Avatar
Tech Guru
Tech Guru

20 Year Member
 
Joined: Mar 2003
Posts: 6,006
Likes: 2
Default

I'm with you. One can get adequate cats, do some mechanical work, and have something that will run for a few winters sufficiently, without poisoning the rest of us and, frankly, cheating.

As noted, most rattling cats do not require replacement anyway

Grant
Reply
Old Mar 23, 2013 | 10:01 PM
  #12  
rossclifford's Avatar
AudiWorld Newcomer
 
Joined: Mar 2006
Posts: 5
Likes: 0
Default

Get off your high horse on the green front, your driving a 10 yr old V8,
Reply
Old Mar 24, 2013 | 03:32 AM
  #13  
4Driver4's Avatar
Tech Guru
20 Year Member
Tech Guru

 
Joined: Oct 2002
Posts: 34,430
Likes: 130
Default

Originally Posted by d6lc
Why the negative sell the car comments?, I agree with the OP, if it's your winter beater your not going to plow 20+% of the value of the car to replace the cats especially if your state doesnt have emissions tests.
Reality for many of us is that we are maintaining them to keep them going and sooner or later a repair bill just isnt economically viable, and its trade in time, outside the RS6 no 4.2 is going to be collectable.

This response is threaded incorrectly in the thread. Please take the time to reply to post that you are referencing. This thread is a mess.
Reply
Old Mar 24, 2013 | 05:03 AM
  #14  
Just Me's Avatar
Tech Guru
Tech Guru

20 Year Member
 
Joined: Mar 2003
Posts: 6,006
Likes: 2
Default

Aha. A thoughtful brain surgeon. Bad start to your contributions here.

Grant
Reply
Old Mar 24, 2013 | 07:08 AM
  #15  
Airbag's Avatar
AudiWorld Super User
15 Year Member
Photogenic
Liked
 
Joined: Oct 2006
Posts: 2,436
Likes: 95
From: In my Garage
Default

yeah i just did the new emissions check. took about 3 days for the monitors to set after clearing codes. i hope the spacers work for you or it could be expensive.
Reply
Old Mar 25, 2013 | 07:29 AM
  #16  
GTA_Driver's Avatar
AudiWorld Super User
Tech Guru
 
Joined: Aug 2004
Posts: 3,277
Likes: 2
From: Toronto
Default

Originally Posted by Huskerbob
So it's okay to pollute the air we all breathe as long as the state doesn't test for it? And since it's "your winter beater" you can slide by without the cats?
Just because the cats are below efficiency, does not mean that the car is polluting the environment like a diesel transport truck.

My A6 has cat efficiency codes for both banks with one cat having burned out. It still passes emissions based on the tailpipe emissions at idle and at cruising speed.

This year we're switching to readiness codes for emissions testing, hence the spark plug non-foulers will be going on my A6.

If you can't afford the car get rid of it and get a Honda but don't b.s. me with your justification for ditching the cats. It doesn't wash. Either get the cats or sell the car for parts. Don't try to hang it in someone else's ***.

I dont know why you tak this so personally, but at some point, any car will lose its value to the point where spending on repairs is approaching the value of the car if not exceeding. Regardless of whether it's a german luxury or a honda.
Reply
Old Mar 25, 2013 | 07:43 AM
  #17  
GTA_Driver's Avatar
AudiWorld Super User
Tech Guru
 
Joined: Aug 2004
Posts: 3,277
Likes: 2
From: Toronto
Default

Originally Posted by Just Me
I'm with you. One can get adequate cats, do some mechanical work, and have something that will run for a few winters sufficiently, without poisoning the rest of us and, frankly, cheating.

As noted, most rattling cats do not require replacement anyway

Grant
This is just a general comment, not directed at you, Grant. I have respect for you (and many others on this forum).

My observation, for what it's worth. Your comment made me think of it, that's all.

----------------------------------

Seriously guys, having cars that pollute is not fun, but think about the global scheme of things. here we're discussing cars that will emit greater pollution than optimally-tuned car, BUT not enough to violate state laws (hopefully).

what about all the modded cars with gutted DPs? guys with offroad pipes?

however, all those tuned cars put together still combine into a negligible amount of pollution in the big scheme of things.

there was an article done by MTO (Ministry of Transportation of Ontario), a PDF doc that i lost, really wish i saved it, where 90% of vehicle pollution comes from transport trucks and other machinery on the roads. not personal vehicles.

then there are diesel trains. and look up the emissions of cargo ships. you'll be truly blown away by what and how much spews out of those ships.


and frankly, we won't solve any pollution issues in the world by address the drip in the faucet but ignoring the fact that the sewage pipe is just open into our back yard.

i am a conscious citizen of the planet, and i don't litter, or pollute, i try to recycle as best i can, but there is much common sense needed.

not every situation requires buying into the mentality of green peace (the organization).
Reply
Old Mar 25, 2013 | 07:57 AM
  #18  
jcman's Avatar
AudiWorld Super User
15 Year Member
Photogenic
Photoriffic
 
Joined: Jan 2008
Posts: 2,697
Likes: 8
From: NE Ohio
Default

Very good point and observation GTA_Driver, good thing plants and trees need that co2 to live releasing oxygen so we can live, this balance is the concern we all should respect and agree on
Reply
AudiWorld Stories

Bringing Audi to Life for Audi Fans

story-0

The Highs & Lows of Every Audi C-Class Generation

 Joe Kucinski
story-1

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

 Brett Foote
story-2

10 Audi Features & Options We Miss the Most!

 Joe Kucinski
story-3

Audi Recreates Crazy-Looking Speed Record Breaker From 1935

 Verdad Gallardo
story-4

Coachbuilder Recreates the 1995 Audi TTS Concept

 Verdad Gallardo
story-5

Every Audi V10 Car Ranked!

 Joe Kucinski
story-6

9 Audi Designs That Aged Like Fine Wine

 Verdad Gallardo
story-7

2026 Audi Q5 Buyer's Guide (Every Model Explained)

 Brett Foote
story-8

Ranking Every Current Audi 'S' Model From Worst to First!

 Joe Kucinski
story-9

10 Best Audis That are FINALLY LEGAL to Import to the U.S.!

 Joe Kucinski
Old Mar 25, 2013 | 08:07 AM
  #19  
Huskerbob's Avatar
AudiWorld Senior Member
 
Joined: Aug 2011
Posts: 1,155
Likes: 0
From: North Carolina
Default

Originally Posted by GTA_Driver
Just because the cats are below efficiency, does not mean that the car is polluting the environment like a diesel transport truck.

My A6 has cat efficiency codes for both banks with one cat having burned out. It still passes emissions based on the tailpipe emissions at idle and at cruising speed.

This year we're switching to readiness codes for emissions testing, hence the spark plug non-foulers will be going on my A6.




I dont know why you tak this so personally, but at some point, any car will lose its value to the point where spending on repairs is approaching the value of the car if not exceeding. Regardless of whether it's a german luxury or a honda.
I'm not taking it personally, just trying to point out that if the car is not worth the repair then it should not be hung into someone else. Part it out or trade it in so that it can be dealt with properly. You know a dealer can't sell one with the cats burned out or at least they shouldn't. It took years to get rid of "the brown LA haze" and I don't want it back. Nothing personal directed to anyone on this forum. Some of you are not old enough (here he goes, the old fart) to remember how bad air pollution really was. I'm just saying.......
Reply
Old Mar 25, 2013 | 08:51 AM
  #20  
Redneck Truck's Avatar
AudiWorld Senior Member
 
Joined: Oct 2009
Posts: 1,065
Likes: 2
From: Plano, TX
Default

I read an article once that asserted that a teaspoon of raw gasoline spilled on the ground did more to harm our environment than a typical, modern engine did while idling for X hours. I don't remember the number, but it was definitely a positive integer.

I have a feeling that if you're so hell-bent on your quest to save the environment that you're willing to make enemies out of friends in the process, then you are barking up the wrong tree.

If driving a ridiculously efficient V8 engine without cats is enough of an offense to give rise to your above response, you must be sending mail bombs to all the 2.7T guys driving their cars with misfire codes or running VTA EVAP and CCV systems.
Reply



All times are GMT -8. The time now is 02:20 PM.

story-0
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-1
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-2
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-3
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-4
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-5
Every Audi V10 Car Ranked!

Slideshow: Ranking every Audi V10 road car

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


VIEW MORE
story-6
9 Audi Designs That Aged Like Fine Wine

Slideshow: A look back at the Audis that didn't just survive changing tastes, they quietly outgrew them.

By Verdad Gallardo | 2026-04-28 19:38:27


VIEW MORE
story-7
2026 Audi Q5 Buyer's Guide (Every Model Explained)

One year off a full redesign, the best-selling Q5 is getting a few more updates.

By Brett Foote | 2026-04-17 09:56:19


VIEW MORE
story-8
Ranking Every Current Audi 'S' Model From Worst to First!

Slideshow: Ranking every current Audi 'S' model on sale today from worst to best.

By Joe Kucinski | 2026-04-16 10:28:28


VIEW MORE
story-9
10 Best Audis That are FINALLY LEGAL to Import to the U.S.!

Slideshow: 10 best Audis that are finally legal to import to the U.S.

By Joe Kucinski | 2026-03-24 17:20:08


VIEW MORE