Hi Tom, do a little search as there is loads of topics on performance parts.
First thing id say is get a forge 007p dump valve the 1.8ts don't like atmospheric ones and forget the turbo timer, asking for trouble.
If its 2001 id guess its most likely k03s, if you say the engine code can confirm. The K03s capable of 220bhp but with your mods I doubt it is, good exhaust but I bet its not turbo back need to do a fair few bits to get that.
Fuel pump wont be needed unless you do everything else before mapping. TIP, maf housing, down pipe, injectors(depending on engine code), stronger actuator, 007p, fmic, clutch, general health check and vac leaks, then the fuel pump and a proper remap.
Like I said mate do a search theres loads of info
