TT (Mk1) Discussion Discussion forum for the Mk1 Audi TT Coupe & Roadster produced from 2000-2006

Re-piping N75 Valve, Boost Machine and Dump Valve Move - Questions

Thread Tools
 
Search this Thread
 
Old 05-19-2004, 07:18 PM
  #1  
AudiWorld Super User
Thread Starter
 
coasTTal's Avatar
 
Join Date: Aug 2001
Posts: 7,771
Likes: 0
Received 0 Likes on 0 Posts
Default Re-piping N75 Valve, Boost Machine and Dump Valve Move - Questions

Over the next couple of weeks I will be doing the DV relocation and Boost Machine installation. The existing pressurized feeds to the DV and the N75 come off of parallel ports on the turbo exit pipe at the firewall side of engine.

A few questions:

1. Why are there 2 separate ports for the DV and N75 feeds?
2. Does it matter whether the N75 sees the hot pre intercooler air, or the colder after intercooler air? The turbo exit would certainly have a higher static pressure.
3. As part of the DV relo I am thinking of adding another small port off of the bottom pipe for the relocated DV that would then feed the Boost Machine. I would like to install my Boost Machine in the area between the relo DV and turbo inlet hose. There appears to be more space and picking up the pressurized air at this point would be easy.

I would just plug the two holes on the turbo exit pipe.

Your thoughts?
Old 05-20-2004, 03:32 AM
  #2  
AudiWorld Uber User
 
TTschwing's Avatar
 
Join Date: Dec 2000
Posts: 53,281
Likes: 0
Received 2 Likes on 2 Posts
Default Should work fine John..>>

Getting the BM into a cooler spot is desirable. Those valves aren't rated for very high temps which is why mine is over to the side. From a pressure standpoint, no reason your plan would not work..
Old 10-13-2014, 07:30 AM
  #3  
AudiWorld Newcomer
 
ifixitscott's Avatar
 
Join Date: Oct 2014
Location: San Diego CA
Posts: 1
Likes: 0
Received 0 Likes on 0 Posts
Default

I am thinking of doing the same mod to my DV inlet. Plugging the two connections on the turbo exit pipe and tapping off second intercooler exit before going to the intake manifold. Did you do this mod? Any feedback would be helpful.
Thanks
Scott
San Diego CA
2001 Audi TT 225 AMU
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
pjpeckweck
A4 (B5 Platform) Discussion
5
08-05-2005 08:34 PM
jae shin
TT (Mk1) Discussion
2
04-05-2004 01:46 PM
audaciousTT
TT (Mk1) Discussion
10
11-05-2003 05:35 PM
Brent V
Performance and Tuning
1
11-10-2000 04:54 PM



Quick Reply: Re-piping N75 Valve, Boost Machine and Dump Valve Move - Questions



All times are GMT -8. The time now is 07:07 PM.