Audi TT The Audi TT line, in both the coupe and roadster combines Audi's All Wheel Drive performance with the feel of a European sports car.

Overboosting

Thread Tools
 
Search this Thread
 
Old Jan 25, 2009 | 10:19 AM
  #11  
ninjatturtle's Avatar
Member
Joined: Oct 2008
Posts: 69
Default

@ NeXeA500
I think it might be time for new plugs. that's what my car started doing and got progressively worse until I changed my plugs.
 
Old Jan 25, 2009 | 10:43 AM
  #12  
NeXeA500's Avatar
1st Gear
Joined: Jul 2006
Posts: 342
From: Charlotte, NC
Default

Really? hmm... perhaps. It seemd to get worse from right when I put in the N75 valve as the computer learned about more boost it just got worse and worse.. now when I try to even get on the throttle a little bit and build a little boost it will almost "miss" if you will...

I could try new plugs but first I'm gonna hook up vagcom and try to reset the ecu and make sure that doesnt fix it.
 
Old Jan 26, 2009 | 06:52 PM
  #13  
azncandyman's Avatar
Thread Starter
|
1st Gear
Joined: May 2008
Posts: 29
Default

Ok, I disconnected the N75 valve and put in a MBC the turboxs hpbc one. Would not having feed back from the valve mess up my ecu?

Would having the N75 and the MBC on cause problems? On the install booklet it said not to use two boost controllers.
 
Old Jan 26, 2009 | 06:57 PM
  #14  
cincyTT's Avatar
I'm make believe
Joined: Dec 2006
Posts: 17,587
From: In my head
Default

you need the n75 to be plugged in electronically and the hpbc controlling boost.
 
Old Jan 26, 2009 | 07:05 PM
  #15  
azncandyman's Avatar
Thread Starter
|
1st Gear
Joined: May 2008
Posts: 29
Default

sorry to be a newb and that I was unclear I did left the N75 plugged in electronically and also the intake part. I attached the hose from the Intercooler and the wastegate to the correct MBC input and output. I tunned it to 17psi and I am running on GIAC chip.

1) Does having the N75 and the MBC both connect cause problems? On the install booklet it said not to use two boost controllers.

2) Does not having pressure reading from the N75 cause problems to my car?

3) How much boost should I be adjusted to? The two adjustment noobs are coarse and fine...how do I adjust the bleed? Is there a good write up for that?

Thanks again for all your help!
 

Last edited by azncandyman; Jan 26, 2009 at 07:11 PM.
Old Jan 26, 2009 | 07:17 PM
  #16  
cincyTT's Avatar
I'm make believe
Joined: Dec 2006
Posts: 17,587
From: In my head
Default

Running both like that doesnt cause any problems. You arent using 2 mbc, you are only controlling boost with one.

No, it just needs plugged in.

20psi +/-. The "fine" is the bleed, the "course" is ball and spring. Just adjust the bleed/fine to 20psi
 
Old Jan 27, 2009 | 08:18 PM
  #17  
azncandyman's Avatar
Thread Starter
|
1st Gear
Joined: May 2008
Posts: 29
Default

My Car threw a EPC code today and power was cut. I restarted and it was fine again. Freaky....I am going to scan for codes when I get home today...
 
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
Jaggz
General Tech
0
Nov 18, 2014 02:30 AM
AudiCross
B5 Models
8
Aug 1, 2012 12:50 PM
awwdii
B5 Models
19
Feb 27, 2008 02:03 PM
petermcA4
Audi A4
2
Nov 3, 2005 10:43 PM
TheQuattro
Audi A4
10
Oct 23, 2005 09:54 PM




All times are GMT -4. The time now is 10:28 AM.