Stalled when oil filler cap off.

[Phil Payne]

> > i feel i should know this (or at least be able to work
> > it out) but...does this apply to the non turbo engines
> > as well?
>
> not really.  The turbos are much more tightly "tuned", and intake air
> management is much more scrupulous.  So they stall when getting that big
> old air leak.  N/A engines tend to be more forgiving, just running
> poorer when the hoses start to crack, or the oil cap is removed.
>
> At least, that's what I think.

It's simply a matter of whether the breathers are attached upstream or downstream of the air
mass sensor - i.e., does air admitted get measured or not.  It has nothing to do with turbos.

--
  Phil Payne
  http://www.isham-research.com/quattro
  +44 7785 302 803
  +49 173 6242039