This is my first ever car, at first I had a significant amount of black smoke coming out the exhaust everytime I accelerated, it crawled up hills and wouldn't go over 70mph. Diagnostics gave me Error code - P0046 - solenoid on the actuator.

Since this I have changed the crank case breather, which has reduced the black smoke but not improved performance at all. I then replaced the boost solenoid, this has helped acceleration slightly and again reduced black smoke but I still can't get over 70mph.

The turbo is still very loud like a whistle or a dentists drill. Previous owner replaced the turbo in the vehicle before selling to me. Any ideas on what to do next?

What is the condition of the intercooler hoses themselves?
The rubber ones go soft and do split...

have a look at the left hand side one as there is a bolt/screw underneath it and tends to ware a hole in it .

Doesn't appear to be any holes in them no, but the air intake hose looks a bit worse for wear, no holes but looks like it's not sealed properly could this be the issue?

Smudge92 said:

the air intake hose looks a bit worse for wear, no holes but looks like it's not sealed properly could this be the issue?

Click to expand...

No, the air intake hose allows air in and so could be removed and the engine would still run OK.

Good inspection of all turbo and intercooler hoses on all sides would be worthwhile.

Ok mate cheers will get that checked out.