You’re sure it’s not an induction leak or wastegate issue?
achimha wrote:
You’re sure it’s not an induction leak or wastegate issue?
+ 1
And add to that list: exhaust leak & controller problems.
Fairly sure it’s not a induction leak
Or a exhaust leak
Rob wrote:
Fairly sure it’s not a induction leak o r a exhaust leak
Based on what ?
The A&P
Then how does the turbo look like? Bearing without too much wiggle, blades all clean, clearance between blade tips and impeller housing small?
Turbos don’t magically get tired. There must be a specific reason why it’s not producing MP and that reason should be clearly visible.
Did you use a cabin pressurizer to pressurize the exhaust and intake system and search for leaks with a soap spray?
Rob wrote:
The A&P
Ok, so what did HE base it on then ?
Did he actually inspect the turbo system ?
If so, why didn’t he have a look at the turbo itself ?
If not, you need to have the system inspected before [needlessly] spending your £££ s …
achimha wrote:
Did you use a cabin pressurizer
A what ? Are you joking ? All you need is the exhuaust side of a common vacuum cleaner for that …
Michael wrote:
A what ? Are you joking ? All you need is the exhuaust side of a common vacuum cleaner for that …
You can’t afford a cabin pressurizer for your workshop, Michael? 
If the shop got one, it’s the best tool for the job. If not, I guess another blower would work although I imagine it is difficult finding a vacuum cleaner where you can connect the exhaust side to a hose. Don’t remember having ever seen a model where that can be done.
