Yep, like mentioned both a tuning box and remap with standard intake and exhaust setup will/should see you floating around the 160-165bhp mark depending on if the car was a NP or SS car, as the SS map is quite a good map (so I belive).
Ive seen cars with induction kits, sports cats and cat back exhaust using remaps make just above the 170bhp mark which in a small little car isnt to be sniffed at and is a clear 10bhp onto of the SS
With the ease of installation, setup and removal for visits to dealerships the TMC does tick pretty much all the right boxes, personally, like stated, if your looking at anything past the induction and exhaust stage then maybe full remap might be best suited as a good map can be suited to the mods at that time on the car