If you drive with your right foot planted to the floor and have no idea about how to feed power in then yes.
Or just go for a lgiht remap. Improve MPG and improve throttle responce and not go for a huge power increase and it should help things.
Its not all about max power figures. Its about how the car devlops the power to how useable it is.
Whacking a great big bhp figure in a diesel and then hoping to god that nothing else breaks with huge torque figures kills Diff's / Gearboxs / Clutchs and CV Joints.
Having something thats a smooth power line and torque curve and it becomes much more usable.
Diesels have a habit of just dumping all their power at one hit which puts alot of parts under stress.
The 1.9 engines can make some serious power in standard trim but the rest of the parts in the drive chain suffer.
This is why big N/A engines get no where near the issues that forced induction get due to the power delivery and more importantly the torque delivery.
Alfa 166 2.0 Twinnie - LPG and a few trick performance parts