i would reccomend you dont spend money on tuning it actually. you get very little gains for a lot of investment.

the for thst of getting 10bhp out of it you could replace it with a YB and gain 100

ive been there, done that, learnt my lesson

i'd go for: exhaust, filter, chip

then leave it. itll make a nice car to drive thats pretty quick and makes a nice noise