man - lots of little curries here these days (cept for basti - hes a lanky lankan)
from one lankan to another - your parents are going to hate it when you mod up your car. After my dad found out about the pod filter he said "you idiot" - or something to that effect in tamil.
any mods you put on the car, you will never get the money back - thats for sure. But depending on what mod you wanna do - just search first on the forums, then have a look at the sponsers or traders when it comes to buying the stuff.
EG - for the exhaust, I went with batmbls products and added a trust pe2 catback - so not too loud, but better response from the car (set me back 1500). Will be getting the dyno results today.
Most people end up doing the exhaust and pod/intercooler first followed by the powerfc and boost I think - well thats what I would have done too. Exhaust will be around 800 - 1500 (depending on what you wanna do), pod (100-150), intercooler (400 - 700), powerfc (around 900), bleed valve (i have no idea).
Oh and check with insurance before u do the mods - just in case.