AudiWorld Forums

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

can someone explain what exactly a test pipe is?

Thread Tools
 
Search this Thread
 
Old 11-03-2003, 02:04 PM
  #1  
AudiWorld Super User
Thread Starter
 
xgunnerx's Avatar
 
Join Date: Jul 2002
Posts: 2,070
Likes: 0
Received 0 Likes on 0 Posts
Default can someone explain what exactly a test pipe is?
yes, i searched. didnt really find anything.
xgunnerx is offline  
Reply Like
Old 11-03-2003, 02:08 PM
  #2  
Member
 
wnut's Avatar
 
Join Date: Apr 2001
Posts: 76,422
Likes: 0
Received 1 Like on 1 Post
Default cat...but w/o the cat.
something like that...
wnut is offline  
Reply Like
Old 11-03-2003, 02:20 PM
  #3  
New Member
 
voodooA4's Avatar
 
Join Date: Jul 2002
Posts: 187
Likes: 0
Received 0 Likes on 0 Posts
Default Instead of the exhaust flowing through the cat (which is an exhaust restriction) it goes through....
the test pipe (straight pipe).
voodooA4 is offline  
Reply Like
Old 11-03-2003, 02:21 PM
  #4  
AudiWorld Super User
Thread Starter
 
xgunnerx's Avatar
 
Join Date: Jul 2002
Posts: 2,070
Likes: 0
Received 0 Likes on 0 Posts
Default
so i take it a test pipe would not pass CA smog?
xgunnerx is offline  
Reply Like
Old 11-03-2003, 02:24 PM
  #5  
AudiWorld Uber User
 
EX-PIMP's Avatar
 
Join Date: Jul 2001
Posts: 39,790
Likes: 0
Received 0 Likes on 0 Posts
Default
Temporary and illegal hollow cat unit.
EX-PIMP is offline  
Reply Like
Old 11-03-2003, 02:25 PM
  #6  
AudiWorld Uber User
 
EX-PIMP's Avatar
 
Join Date: Jul 2001
Posts: 39,790
Likes: 0
Received 0 Likes on 0 Posts
Default Might Pass Emissions, but some state laws say you must have one.
So they shouldn't give you a Cert.
In California anyway.
EX-PIMP is offline  
Reply Like
Old 11-03-2003, 03:11 PM
  #7  
Member
 
Yippers®'s Avatar
 
Join Date: May 2001
Posts: 17,322
Likes: 0
Received 0 Likes on 0 Posts
Default
Fed requirement to have a cat on our cars IIRC
Yippers® is offline  
Reply Like

Trending Topics

Old 11-03-2003, 03:21 PM
  #8  
Banned
 
Mat Indukts Lambos's Avatar
 
Join Date: Apr 2003
Posts: 5,742
Likes: 0
Received 1 Like on 1 Post
Default Re: can someone explain what exactly a test pipe is?
It's called a test pipe, because originally tuners used them to tune the engines without the hindrance of a cat messing up the gas readings. They're highly illegal for use on all U.S. roads, and fines (from what I know) can reach $10,000.

They're beneficial for power since they reduce the restriction in the exhaust just after the turbo.

I have seen 5.0 modified Mustangs pass VA emissions dyno testing with test pipes, but they were cherry hot!

I'd like to think that audi owners only use thier test pipes for use on the tracks.....<ul><li><a href="https://forums.audiworld.com/a4/msgs/1823153.phtml">Here's one I recently sold....</a></li></ul>
Mat Indukts Lambos is offline  
Reply Like
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
Please clarify something for me....If I go with a test pipe -
Monkeyboy
A4 (B5 Platform) Discussion
11
10-06-2006 07:29 PM
has anyone successfully passed emissions with a test pipe?
A4Rye
A4 (B6 Platform) Discussion
1
04-15-2005 12:41 PM
what is "test pipe" ?
Dixter
A4 (B6 Platform) Discussion
8
08-11-2004 05:14 AM
What the hell is a test pipe?
ReTodd
A4 (B6 Platform) Discussion
6
07-12-2004 04:58 PM
The Heck is A Test Pipe? Would Anyone Care to Educate Me?
SP (oenophile)
A4 (B6 Platform) Discussion
13
06-29-2004 01:43 PM
Back to Subforum
A4 (B5 Platform) Discussion
View Next Unread
what do you guys think about the oett body kit?




Advanced Search
Quick Reply: can someone explain what exactly a test pipe is?


Reply Closed Thread Share

All times are GMT -8. The time now is 06:26 AM.