Hi - just wondered if anyone else had experienced this before...
I've had a BT upgrade and recently experienced problems with boost - put my foot down and it's completely flat. Turn off the engine, turn it back on again...and hey presto! It SEEMS to come back...very strange.
VAG is reporting error code:
17705 - Pressure Drop between Turbo and Throttle Valve (check D.V.!)
Replaced a suspected split in a pipe and changed the DV spring to blue.
I have had a botch a fix recently - a pipe going to the recirculating valve had split - so I've just managed to fit the valve straight on to the pipe where it had split and secured it with a jubilee clip - this couldn't cause a complete drop in boost.
Any help would be greatly received.