simo

I have a 1.9 TDI (110 BHP). I have a probable turbo problem. When towing a caravan, especially up hill, there is a definate power loss. This all started when I needed a new cylinder head after a valve collision with a piston. The engine sounds great apart from this power problem. The garage can't figure it out. They said they have replaced the vacuum hoses. Any ideas? Simo