No point changing the air intake.... I think its pretty much the same box on the Abarth and the T-Jet, the SS has a different intake route I think thats about it. Possibly a panel filter or a induction kit (if thats your thing)
140-145 max really on the standard turbo, getting hold of a 2nd hand Abarth one is quite difficult now though! (350 Abarth GP Made, only the ones that changed to SS replaced the turbo). You could get a A500 turbo, but these are not quite so good as the AGP ones.
Obv with any power mods, I would expect your insurance cost to go up a little anyway
Older T-Jet on a here a while ago was running "180bhp" with some mods, me and him had a friendly straight line race, I pulled away in my 155bhp Abarth, so all those mods he did didnt really make too much of a difference....
Official 0-62 of the standard GPA is 8.2 seconds, vs 8.9 for the 120 Bhp T-Jet, honestly 0.7 seconds for all that work......, leave it standard for a few months at least, then remap when you get really bored to 140 bhp ish and then see if you fancy another car after that....
