Yes check all the air piping especially around the second blow-off
valve and vaccum tank.

My 66 fault codes typically come up why under boost between 3-4k
rpm. Its generally a result of lost vaccum and the system detecting
that the second blow-off valve not opening (since it needs vaccum).

The above may not be the same as your situation but its somewhere to
start. The various soleniods can also be a problem. I built a hose
diagram of the box if you need one.

R.


--- In legacyb4@yahoogroups.com, "kosti_b4" <jsheat@...> wrote:
>
> --- In legacyb4@yahoogroups.com, "gwyneddcraft" <gwyneddcraft@>
> wrote:
> >
> > I have a code 66 on my 1994 Legacy Twin Turbo. Can anyone help
> narrow
> > down problem. The car runs fine but after around 80 miles the
check
> > engine light comes on and car goes into limp mode, it is
restricted
> to
> > 3000rpm. I can get past this limit by pressing accelator down
> slowly.
> > If I turn it off and restart it is fine for another 80 miles
then
> the
> > light comes back on. The only problem I have noted is a
reluctance
> to
> > start in the mornings.
> >
>
>
> Hi Mate,
> Code 66 means you have a problem with the turbo's.
>
> Check all piping, solenoids and values associated with your turbo.
>
> I've sent you an email with a basic flow chart to help u out mate
>
> PEACE
> Kosti
>