[s-cars] Two Mechanical Problems at the Track - Update

[Bruce]

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Thanks all for the advice. It was perfect, as usual.

The bubbling Pentosin and no brakes was the "volcano", bad seals in PS/hydr=
aulic pump. Rebuilt pump at Audi dealer and Pentosin flush fixed it right u=
p=2E Only cost me $50, thanks to extended warranty deductible!

The low boost fixed itself. While I was driving and exploring the problem f=
urther, I floored it and car went to low 18 lbs, bucked for a second, and t=
hen went to full boost. It's been going to full boost since. I changed the =
BPV to the Stratmosphere unit just in case, but car is now running fine.

There were a few opinions that it was heat soak at the track, but it seems =
unlikely since it was still doing it two days later after a cold start. I'l=
l pull codes next week and see what she says.

Bruce
'93 S4, back to good as nearly new