[BiturboS4] S4 charge pressure control

Tuan Nguyen tuan at grdperformance.com
Wed May 21 13:33:23 EDT 2003

Do you any data logs?  Are you loosing pressure in all gears or just the
lower gears?  I seem the have the same problem and haven't been able to
figure it out myself.

-----Original Message-----
From: biturbos4-admin at audifans.com [mailto:biturbos4-admin at audifans.com]
On Behalf Of Simon Roberts
Sent: Wednesday, May 21, 2003 6:15 AM
To: BiturboS4 at audifans.com
Subject: [BiturboS4] S4 charge pressure control

Hi all

Is anyone familiar with the charge pressure control system for the S4.
appears to have developed a fault whereby the car will run at full boost
okay then for some reason the car will suddenly run in a safe mode
at low boost.

Can anyone point me in the direction of a sensor or anything else that
be faulty??

Simon Roberts, Senior Design Engineer
Technical Centre
Owen Road
Norfolk IP22 4ER
Tel:  +44(0) 1379 646212
Fax: +44(0) 1379 646909
Mob: +44(0) 7771 727201

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