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

MBC problem

Thread Tools
 
Search this Thread
 
Old Mar 29, 2005 | 06:45 PM
  #1  
Brilliant_A4_99's Avatar
Thread Starter
New Member
 
Joined: Mar 2005
Posts: 20
Likes: 0
Default MBC problem

I have a '99 1.8t and I just recently installed a MBC on it. In first gear at full throttle it seems to be working fine, giving me a little more than 11 psi of boost. But after first gear it seems to be running stock boost at about 7 or 6. What could the problem be??
Reply
Old Mar 29, 2005 | 06:48 PM
  #2  
mAd1(gt3071r)'s Avatar
Member
 
Joined: Jun 2003
Posts: 3,617
Likes: 0
Default

what did you do with the n75?
Reply
Old Mar 29, 2005 | 06:48 PM
  #3  
rookie18's Avatar
AudiWorld Senior Member
 
Joined: Jun 2002
Posts: 1,210
Likes: 0
Default You will find that most people around here don't run MBC.

Why not get a chip?
Reply
Old Mar 29, 2005 | 06:49 PM
  #4  
Brilliant_A4_99's Avatar
Thread Starter
New Member
 
Joined: Mar 2005
Posts: 20
Likes: 0
Default Re: what did you do with the n75?

I took an extra hose and connected the two openings together.. I read somewhere that you were supposed to do that, is that wrong?
Reply
Old Mar 29, 2005 | 06:51 PM
  #5  
Brilliant_A4_99's Avatar
Thread Starter
New Member
 
Joined: Mar 2005
Posts: 20
Likes: 0
Default Re: You will find that most people around here don't run MBC.

Im only 16 and a little short on money : (
Reply
Old Mar 29, 2005 | 06:51 PM
  #6  
TristanP's Avatar
AudiWorld Super User
 
Joined: May 2001
Posts: 12,259
Likes: 0
From: Wilmington, DE
Default The problem is you're running an MBC

Chip that bad boy.
Reply
Old Mar 29, 2005 | 06:52 PM
  #7  
TristanP's Avatar
AudiWorld Super User
 
Joined: May 2001
Posts: 12,259
Likes: 0
From: Wilmington, DE
Default

Then wait until you can save the cash and do it right
Reply
Old Mar 29, 2005 | 06:54 PM
  #8  
Brilliant_A4_99's Avatar
Thread Starter
New Member
 
Joined: Mar 2005
Posts: 20
Likes: 0
Default Re: Then wait until you can save the cash and do it right

what chip is the best? and how much is it?
Reply
AudiWorld Stories

Bringing Audi to Life for Audi Fans

story-0

10 Strangest Audi Designs That Actually Made Production

 Joe Kucinski
story-1

2027 Audi Q7 and SQ7: Audi Upgraded EVERYTHING!

 Michael S. Palmer
story-2

Audi Unveils Absurdly Cool New Supercar: 10 Things You Need to Know!

 Verdad Gallardo
story-3

The Highs & Lows of Every Audi C-Class Generation

 Joe Kucinski
story-4

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

 Brett Foote
story-5

10 Audi Features & Options We Miss the Most!

 Joe Kucinski
story-6

Audi Recreates Crazy-Looking Speed Record Breaker From 1935

 Verdad Gallardo
story-7

Coachbuilder Recreates the 1995 Audi TTS Concept

 Verdad Gallardo
story-8

Every Audi V10 Car Ranked!

 Joe Kucinski
story-9

9 Audi Designs That Aged Like Fine Wine

 Verdad Gallardo
Old Mar 29, 2005 | 06:59 PM
  #9  
mAd1(gt3071r)'s Avatar
Member
 
Joined: Jun 2003
Posts: 3,617
Likes: 0
Default no not wrong

you recirculate the n75 so it doesn't throw any codes. Not to mention, it'll act real stupid if left open.

What turbo are you running btw? And the reason your not boosting that well is most likly due to programming. You can run an MBC all you want but if you don't have proper provisioning (software) for it, the MBC will just do harm. For example, can over heat the turbo, can cause the wastegate to stick. You have to be careful with an MBC. What's your current setup?
Reply
Old Mar 29, 2005 | 07:05 PM
  #10  
TristanP's Avatar
AudiWorld Super User
 
Joined: May 2001
Posts: 12,259
Likes: 0
From: Wilmington, DE
Default You really want to do a search before asking that question

Used chips should be ~$300, but can vary. I got my spare ECU AND chip for $300. Check the classifieds.
Reply



All times are GMT -8. The time now is 10:43 PM.

story-0
10 Strangest Audi Designs That Actually Made Production

Slideshow: 10 strangest Audi designs that actually made production

By Joe Kucinski | 2026-06-10 16:32:29


VIEW MORE
story-1
2027 Audi Q7 and SQ7: Audi Upgraded EVERYTHING!

Slideshow: Everything you need to know about the 2027 Audi Q7 and SQ7

By Michael S. Palmer | 2026-06-09 06:02:56


VIEW MORE
story-2
Audi Unveils Absurdly Cool New Supercar: 10 Things You Need to Know!

Slideshow: Limited to just 499 units, the 987-horsepower halo car signals a new chapter for Audi performance.

By Verdad Gallardo | 2026-06-04 17:37:15


VIEW MORE
story-3
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-4
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-5
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-6
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-7
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-8
Every Audi V10 Car Ranked!

Slideshow: Ranking every Audi V10 road car

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


VIEW MORE
story-9
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