My other vehicles are far from stock. The ’94Z has a cammed 3400 engine swap with longtube headers for example. So, how long can I keep the Abarth stock? Apparently, 3 weeks.
Starting things off simple. Just a replacement intake pipe and the cool chrome fuel filler. Will try to hold off on anything else until after winter, but no promises! 
Why did I just go for the replacement aluminum pipe, rather than a full cone intake system? The stock system draws in cool air from behind the headlight, and appears quite efficient, aside from the bit of a bottleneck in the piece I’ve replaced. The other aftermarket systems seem to lose this “ram air” advantage, and some route the intake pipe right over the turbo, causing a drastic increase in IAT (Intake Air Temperature).
Stock intake system
Intake pipe replaced
Chrome fuel filler waiting to be installed
Stock fuel filler cap
Chrome Fuel Filler Installed
New chrome fuel filler installed. Requires removal of inner fender liner to access the bolts to remove the stock filler door