I have a 94 S4, recently found I had a blown intake gasket ( had high RPM's), replaced , upgraded injectors, now runs fine all parameters are within spec's on freescan.
My question is the vacuum at idle is only 6-8 Hg it also flutters very badly? I know in a V8 that would reference a bad intake valve, but no noise at all from intake and car runs fine? is this normal for this 4 cyl? also since repair my BOV is not operating, have checked it is not a mechanical issue as it works with a vacuum pump I do not know what the readings were before repair it ran fine so I never scaned it or bothered to look. I know there are no vaccuum leaks so why the low vacuum that flutters like a bad valve?