Yes it did throw a code, afraid I can't remember what it was now though. It was due to the split hose but I had already ordered a map sensor so got a hose as well and put them both on at the same time.

It could either be that or the boost solenoid although I think that if the boost solenoid had failed it would either make zero boost or overboost and be hesitant on full boost.

If it were me i'd stick a map sensor on it as they are the easiest to do, boost solenoid is a nightmare!