Limp Mode/Boost problem please help

[djjay]

Hi all, I own an A3 1.8T 2000 model.
Lately the car has been going into limp mode. I discovered a leaking boost pipe which I have replaced, but the problem still persists.
Now comes the weired part, If I remove the pipe from the silver thingy at the back of the engine, boost returns to normal and the power is back. However, It chows fuel like a mutha...

Can someone please help with this problem
What is the purpose of this pipe? Is the N75 toasted on my car? Is it dangerous driving with this pipe off?

I will upload a pic of the little pipe in question shortly

Thanks in advance

 

[CJA318T]

just a newbie question...what is limp mode/boost?

CJ

 

[cawood]

where thwe car goes into a 'safe' mode running low boost etc when it discovers a fault, so you can still get the car home but not risk blowing it up

think im right, someone will correct me if im wrong

 

[djjay]

Yes, that's quite right. To put it simply, there's just no boost

 

[djjay]

Here is the pic of the pipe
Guys any help will be appreciated


[URL="http://aycu16.webshots.com/image/14215/2004405737396530038_th.jpg"][/URL]

Please Click the link below for a larger image:
http://allyoucanupload.webshots.com/v/2004405737396530038

 

[CJA318T]

******!

 

[djjay]

Anybody with a suggestion?

 

[djjay]

Just picked up this fault:

01262 - Solenoid Valve for Boost Pressure Control (N75)
26-10 - Output Open - Intermittent

Any help will be appreciated