Hi chaps, a few days ago I had to have a new water pump.

Since then my turbo makes a spluttering sounds when I get to about 50mph and acceleration is poor.

My question is, have the garage caused this when changing the pump?

Any ideas what it can be?

Thanks

I wouldn't have thought a water pump change would do this. But as you paid a garage to do it, ring them and ask them to check it ( politely ).
Best place to start IMO.
Mike