Hi, i have a 2008 BT50. It's been going into limp mode, mainly when I was towing. The diagnostics showed a fuel leak. It's had a new fuel tank, pipes, filter, fuel pum and injectors. Today when I picked it up from the garage it conked out 4 times on the way home. As soon as I accelerated or went uphill, it stopped. As if it was starved of fuel. It starts again immediately, there's no smoke, no noise, no overheating. Could it be the vaporiser? (She says hopefully!)

 

Welcome to the forum

 

The shop should have done more diagnostic checks before releasing it. By changing all those parts, it should be their responsibility to correct the problem.
Your model and year has a OBDII diagnostic connect. Some that knows how to look around the ECU/PCM needs to go look at more than just a pending DTC.