Car troubles! Help! vag-com codes!!

[Sobo]

Hey. I own a 1997 Audi A4 Quattro. It's a 1.8l turbo 5 speed manual.

It has a Borla complete exhaust, K&N airfilter, and a MTM chip in it. THAT IS ALL.

The car has been running funny lately, hesitating when a lot of torque is needed. I changed the plugs, changed the air filter, changed the fuel filter, cleaned the injectors and changed the oil. Nothing.

I bough a vag-com ebay kit and ran the auto search. I got one code:

Address 01: Engine
Controller: 8D0 907 557 N
Component: 1.8L G1/5VT HoSp HS D05
Coding: 06201
Shop #: WSC 06435
1 Fault Found:
17963 - Charge Pressure: Maximum Limit Exceeded
P1555 - 35-10 - - - Intermittent
Readiness: 0000 0000
.

1. First off, whats this mean?
2. Second off, what do I do to fix my car?

Maximum limit sounds something like the *stock* DV can't handle the added boost forced in by the turbo. Am I correct?

[Matt@JHM]

It's looks like you are boosting more than you should... it could be a faulty N75 valve.

Log block 115 to see your requested boost VS. your actual boost.

[Sobo]

Okay, I'm going to do that log right now.

Is it bad to drive on a faulty N valve?

Also how much are these valves and are they hard to change?

[Sobo]

114 shows stuff... 115 shows N/A.

[Ewok_Fetus]

Since he is a 1997, he won't have a MAP sensor so there is no real way to monitor boost...

[Sobo]

114 is a boosting type of deal, but I think your right.

I don't think I have boost leaks, but what are the possible problems?

N75 valve for sure?

[Mawhitey]

MAF, its what mine threw up till i swapped out the MAF sensor

[Sobo]

if i unplug my mass airflow sensor would that help me diagnose the problem?

[Sobo]

Unplugged the mass airflow and took it for a spin... Boost became suction and the car was definatly less powerful.