This aint quite as imporrtant if you have phase + s/ware but still relevant and some of you experienced guys will find this newby stuff but none the less here it goes

The boost hose that from the engine bay to the ECU needs to be securely fastened to the ECU/ECU & Boost guage if it isnt the ECU wont see all the boost your engine is making and will under fuel accordingly I am confident that this was a contributing factor to my phase 3 engine blowing up the easiest way to check is to listen whilst you boost with the ECU cover panel in the footwell removed it should be silent but if you can hear a hiss that goes up with the boost you have a leak fix it imediately