Old thread here lol. I think the blitz dump valves are extremely stiff, mines the same. I only get it "dumping" When I wind the adjustment screw out as far as it will go. Nothing wrong with a bit of chatter though ;)
Never seen one of these before either ;) I'm guessing it's really similar to all the other plug and play ECUs as it looks like a standard one. So would raise the red line, remove fuel cut, remove the speed limit, fuel for more boost ect
The light is in the top right oval, between the rev counter and speedo
You'll have to let us all know if changing the bulb works, I'm to lazy to change mine and find out