I have a Colombo & Bariani 280/272 cams in my 1.8 TS 16V. In their website it shows as "Stradale Medio", I think it means medium-street cams. I also have an aftermarket chip and FSE adjustable fuel pressure regulator to go with it.
At idle, its pretty lumpy. I have an aftermarket exhaust on, so everyone knows that I have changed the cams. Those who didn't know may think that I have an idling problem
I feel that the powerband has shifted further up the rpm range, coz at 1000+ to about 2000+ rpm, there is some kind of flat spot, where the car has no power, then at close to 3000rpm, the car comes alive and pulls all the way to redline. I also feel that I don't have to downshift as much when overtaking on the highways, just flooring the throttle will be sufficient for most situations.
Maximum speed also has improved, coz previously, before I had the cams, chip and adj. fuel regulator, I could hit about 220kph on flat roads (managed 240kph on a long downhill stretch). After I had the cams, I managed 230+kph on flat road, while trying to chase my friend's 156 2.5 Q-system. It felt like it still could go, but the injector light was coming on. I had a some fueling problem that time, but never had a chance to test top speed again ever since.
On the dyno, it showed about 130+bhp and around 160+Nm on wheel. Did not dyno before the mods, so I don't know how much gain I got from the setup. The bhp figure seems slightly higher than a stock standard 156 2.0 Selespeed (about 130bhp) that was also on test that time.
So far I'm very happy with the cams, after about 5 years of usage. No regrets fitting them. It gives a little more fun in the twisty B roads and makes the 155 a pretty relaxed cruiser at high speeds on the highways.