I have a 2001 1.6 Zetec SE MK1 Focus. I know these are not the fastest cars ever and but i love my little car!!! I would like to get some more power out of it to give IT and me a little treat!!

To start with, i am going to get the following as they are relatively cheap:
K&N Induction kit
FSE Boost valve
Denso iridium spark plugs
Magnecore ignition leads

When i got some spare money that the wife dont know about:
Exaust - Mongoose P/N FDS021-16
Piper 4-2-1 Exaust manifold
Bluefin P/N BF05-FORD-N

and finally when i win the lottery or get a divorce :
Active technology throttle bodies
Piper Camshafts P/N FOC16BP270

I am not a mechanic but am quite technically minded and have played with some engines doing maintenance and part changes etc... i will be looking to do most of the work myself apart from things where a ramp is needed etc!

My car is bog standard at the moment and i dont want to mess around with engine replacements etc... but i do want to put my personal stamp on it.... I dont mind spending a little money, even it is seems like a waste as i plan to keep the car for a while yet....

QUESTIONS:
I DONT WANT TO HAVE A REALLY LOUD EXAUST.... does anyone know how i could increase power but still keep the noise down??

Does anyone know of any other mods i can do on the cheap that are not listed above?

Cheers for reading and any replies in advance!

Jon