Did the clutch and flywheel on my 1.9 2008 Mk1 Superb, all sorted but I now have no turbo boost. Can only asume we have pulled something apart and didn't notice while getting at the top gearbox bolts.

We only disconnected the MAF and 2 connectors on the near side of the gear box.

I would think its a variable vane turbo with a vacuum system.

Any ideas on where to look please?

Edited 25 October, 201312 yr by bryan350lc

Yes, the turbo is VNT. Check the vacuum control hose from the solenoid valve (N75) to the turbo actuator. The N75 is a changeover valve and it is essential that the air inlet hose is still attached to the air cleaner housing.

Try disconnecting the MAF. Does it make a difference?

Well I know I haven't reconnected anything to the air cleaner, so will start there in the morning.

Is it on the top of the air box or on the lower section, the guy helping me put that back on and may have missed it, thought I put the top on and connected the MAF.

Edited 25 October, 201312 yr by bryan350lc

Just had a quick look, I asume it's the little black plastic pipe tat is near the turbo, I'm possibly missing a lent he of thicker rubber pipe that goes from the end of it to the valve as its about 4 inches away and not connected to it.

Ssounds like it may be your problem

When you lowered the engine at the flywheel end, you probably pulled off the narrow bore vac pipe which feeds the control system from the tandem vac pump. There's very little slack in it.

 

rotodiesel.

I'm with rotodiesel on this topic, happend to me also. 

Problem now is the rubber coupler fell off and I have no under tray as it was damaged and got ripped off when we had floods so I've lost it!

Just going to main stealer to order one.

Problem now is the rubber coupler fell off and I have no under tray as it was damaged and got ripped off when we had floods so I've lost it!

Just going to main stealer to order one.

Looked from under the car and it doesn't go to where I thought when I checked on my friends car. Re connected it and got boost back.

Thanks for the help guys.