Audi Original "S" Cars Discussion forum for the Audi Audi Ur S4, Ur S6, S2 & RS2

When is the N75K a good upgrade?

Thread Tools
 
Search this Thread
 
Old 03-20-2006, 09:54 PM
  #1  
New Member
Thread Starter
 
mrpeugeot's Avatar
 
Join Date: Mar 2006
Posts: 129
Likes: 0
Received 0 Likes on 0 Posts
Default When is the N75K a good upgrade?

I've been cross-reading a few other forums and found that the N75K can create a potentially damaging lean condition on certain engines (mostly 1.8T) when they are chipped.
I take it, however, that it is tried and true on the AAN? Does it make a difference if your car is chipped or not? If it has the 1.9 BAR spring or not? If you have an upgraded DV? Or does it work even better with all those mods (which I just happen to be in the process of doing with my UrS4)?

Thanks!

Adam
Old 03-20-2006, 10:12 PM
  #2  
AudiWorld Super User
 
tpierce's Avatar
 
Join Date: Feb 2002
Posts: 17,019
Likes: 0
Received 0 Likes on 0 Posts
Default i have never heard of a N75 valve causing a lean condition

since all it does is control the wastegate, by the commands given to it by the ecu. The only differences i've heard about them is that some react quicker, some smoother. There was a website that did a test of a series of them, i think the general concenssous was the the best all around was the N75 from the AAN.
Old 03-20-2006, 10:17 PM
  #3  
AudiWorld Senior Member
 
Stroker//S4's Avatar
 
Join Date: Apr 2003
Posts: 1,293
Likes: 0
Received 0 Likes on 0 Posts
Default I ran one, and Tom M. ran one, there really is no difference from what

we can tell...same boost and everything. That's from my own personal experience, and from what I remember Tom telling me when he installed his, he had the same results.

I was running a T04E/K26 turbo at around 25-26psi, and Tom was full RS2.<ul><li><a href="https://forums.audiworld.com/s4s6/msgs/49283.phtml">https://forums.audiworld.com/s4s6/msgs/49283.phtml</a</li></ul>
Old 03-21-2006, 01:27 AM
  #4  
AudiWorld Super User
 
S4-Fireblade's Avatar
 
Join Date: Feb 2005
Posts: 2,001
Likes: 0
Received 0 Likes on 0 Posts
Default Seems to exist some diferences between them:

<img src="http://pictureposter.audiworld.com/87791/page1.jpg">

<img src="http://pictureposter.audiworld.com/87791/page2.jpg">

<img src="http://pictureposter.audiworld.com/87791/page3.jpg">

<img src="http://pictureposter.audiworld.com/87791/page4.jpg">
Old 03-21-2006, 04:05 AM
  #5  
AudiWorld Super User
 
TabulaRasa's Avatar
 
Join Date: Apr 2001
Posts: 6,009
Likes: 0
Received 0 Likes on 0 Posts
Default I noticed no difference between N75H and N75J

Granted I drove with a bad N75H for about a month and it felt slower than stock or just about stock.
Old 03-21-2006, 05:09 AM
  #6  
AudiWorld Super User
 
S6 4RiNGS's Avatar
 
Join Date: Aug 2001
Posts: 5,202
Likes: 0
Received 0 Likes on 0 Posts
Default

Adrianno, send me those in high res so I can read them... Email me. thanks
Old 03-21-2006, 10:26 AM
  #7  
AudiWorld Member
 
MikeL's Avatar
 
Join Date: Jul 2001
Location: NYC
Posts: 480
Likes: 0
Received 0 Likes on 0 Posts
Default

Just look ^^^ at the link in SpoolinS4's post for larger version.
Old 03-21-2006, 10:55 AM
  #8  
AudiWorld Super User
 
|skolnick's Avatar
 
Join Date: Jan 2004
Posts: 23,765
Likes: 0
Received 1 Like on 1 Post
Default

Yeah I scanned those from EC and posted them a while back.
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
JD797
S4 / RS4 (B5 Platform) Discussion
12
09-23-2008 10:11 AM
Chapaarell80
Audi Original "S" Cars
12
03-27-2008 10:38 AM
kmv3
Audi Original "S" Cars
4
02-22-2007 10:22 AM
Kingttr
A4 (B5 Platform) Discussion
2
05-02-2006 04:29 AM



Quick Reply: When is the N75K a good upgrade?



All times are GMT -8. The time now is 06:19 AM.