Right... well first off it may be worth calling TD or a previous owner, asking what it was max'd on... During the remapping session they may have maxed something... Be it injectors possibly? A TD05 is good for 320-330bhp so the turbo has plenty more to go yet... No Need for changing cams until 360-370bhp... No Need for changing inlet manifold until 350bhp... A full 3inch exhaust system front to back, could help free off some power top end and help with spool too! But before you start doing any of that, you need to find out what the car is currently maxed out at...