I haven't really read any of the replies in this thread ill just point that out but as for performance I've said this to people before I spent thousands on my old 1.2 8v GP and I must have had like 75-80bhp, absolutely pointless.
I got a daft hp reading from my friends 1.4 8v, using this dongle thing that plugs into the diagnostics port, he manages 65.5 bhp at 5500 rpm, the car has a fair few miles on it but it goes to show how much cars performance can fluctuate from car to car, so 2bhp from an exhaust or remap on this car is pointless
I saw the word 'induction' as I was scrolling down to reply, do not bother with any induction kit apart from a gsr kit if you fancy paying £180 which will give you very slight gains that probarly arn't worth it. I tried like every single type of induction upgrade and none made a difference, most lost like all torque the car had.
One day a family member passed away (my mother) and I got a bit of inheritance, wasn't the largest amount of money in the world but I was glad it was in my hands, I decided to buy a 1.9 mjet and have never looked back.
If I could go back though, i would unspend all my money and spend it on the mjet.
MY insurance with no years no claims, and being 18, was only £120 more for the mjet than the 1.2, the power and torque on this thing is unbelievable for a punto, it beats abarths too
(it will beat those damn 182's one day) so save all your money and buy something powerful and special!
so yeah i've basically wrote out my life story, I just hate to see people spend too much money on underpowered cars that aren't worth it so hopefully you wont