boost instability

[Ted Fisher]

Check for a problem with the vacuum line to the turbo by pass valve.

Holbrook at Associates wrote:

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>I have a 91 20v quattro and have been experiencing a couple problems.The main one has to do with the turbo boost pressure going up to a peak of about 18psi and as it peaks it will then drop of and occilate back between about 13 and 18 psi. You notice a surging of acceleration along the way.Also recently it has been stalling when you let off the throttle after reving it at high rpm. To keep from stalling you have to get on the gas and ease it back to idle. Any info would appreciate much.  Steve Holbrook
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