I have added the hart inlet after mark did my mapping, I can see that the air flow in to the engine looks to have a better path and people say that even a spacer on the std inlet makes a difference but I do wonder if the inlet will make any noticeable difference next time the car is mapped?

I had my inlet zircotec coated to match the exhaust for colour more than anything but they suggest it can help to protect the inlet temps but in theory it could also keep any heat in there too.

For me I think getting the best intercooler in there would be the biggest improvement as the inlet temps were holding the mapping back, I wouldn't want any more power or boost yet though until I have it long studded and a good head gasket and rebuild.