A new turbo owner, welcome.
I hope you realise you can't "chip" a turbo Cinq as the turbo is not controlled by the ECU, its much more agricultural than that. So taking it to a remapping company will yield little gains, though I know Morego are more than that but there operation concentrates on modern cars. The cars fuelling for the 2nd injector is controlled by the Aquamist MF2 injector driver.
To run that car at 0.8bar it would need fully rebuilt as its runs standard compression ratio which mean if you up the boost it will melt itself with the detonation. So that means lowered compression by means of either the purists choice new pistons or a spacer head gasket which works but its not ideal for squelch. Then you would need to get more fuel pressure as the Cento's run as standard 0.8-1.2Bar of fuel pressure, pretty low, therefore you run 0.8bar of boost and they equalise each other out meaning no fuel pressure meaning detonation meaning melt down again.
If I was you I would put my efforts else where, sort the engine bay out its a bit untidy and unsightly. If you want more power get a bigger throttle body on it, Tricker's 40mm is great, get the head fully ported and polished, get the induction sorted out correctly so its not sitting in a hot engine bay, get a straight run from turbo to up high inside the passenger side wheel arch keeping it low boost should mean doing this means you don't need an intercooler.
If you go anywhere near 110lb ft of torque the clutch gives up, so you would need to move to a 200mm (standard is 180mm) flywheel and clutch arrangement from a Stilo (or any other Fiat FIRE engined car running the bigger set up), this will set you back near enough £200, do not bother with any uprated Cinq clutch they do not work, many of us tried and failed with those, its wasted money.
That's more than enough to get you going.
And as you posted pics of your other car you have to expect some opinions on it. The gauges on top of dash are horrible, the
stickers all over back window are not to my liking at all. And if those are HID's they are illegal, if you don't believe me read the Department of Transport's website, they regulate and enforce the rules of our roads
http://www.dft.gov.uk/pgr/roadsafety/drs/hidheadlamps
The wheels are great though, and overall the car looks well cared for car, though has it ever been on a rolling road to quantify the estimated 75bhp? The turbo car will be much quicker even as it is.
Aaron.