The 1.6 TS for a 1600cc engine is fairly nippy. But needs to be stirred. Its the one I have and although its very smooth even in 5th gear at 20mph (mainly down to gearing) it lacks the torque delivery.
the 1.6 feels highly strung for an N/A road car. The 2.0L feel faily detuned in comparison. There's plenty more to unleash I would imagine.
The JTS in my mind is an improvement and with all the niggles the TS does have least the torque is substantially up. Which as others have said I still think the 147 / 157 and GT are still fairly weighty. The engines before had been in much lighter cars.
I've often wondered what the 145 would be like with the TS engine. As the engine itself is good. Its just the weight that hurts its performance.
Still least on a run even my poop 1.6 will acheive a true 42mpg.
Shame you never got the 2.2 JTS in the 156. Think that would have been a decent mover.
But then again you would argue why have a JTS with a similar output to the 2.5 V6.
Alfa 166 2.0 Twinnie - LPG and a few trick performance parts