wastegate hoses--type 44

[isham-research.freeserve.co.uk at pop.pol.net.uk]

> There are 2 hose connections on the wastegate. What happens if either one
> is disconnected? I think there is one used a vac. port and the other is a
> pressure port where boost pressure is used. Is any of this true? No one has
> been able to discuss the wastegate on the list, so please let me know if
> you have any info. Thanks.

If the lower one is disconnected, the wastegate will never lift in
response to boost levels and almost instant overboost will result - the
ECU (if not modified) will shut off the fuel pump.

If the upper one is disconnected, it varies by model.  MAC-11 and later
cars will lose ECU control of boost - the main symptom is increased
turbo lag because the ECU cannot achieve its deliberate short-term
overboost.  On earlier cars (without a wastegate frequency valve)
there's almost no effect.

--
 Phil Payne
 http://www.isham-research.freeserve.co.uk/quattro
 Phone +44 7785 302803   Fax: +44 7785 309674