usually the rough idling/running that clears when it comes on boost is caused by one of two things, firstly the AFM (Air Flow Metre) could be damaged...it sits directly behind the Airfilter/Airbox and connects to the Turbo inlet pipe. or The Lambda sensor is faulty
A faulty turbo is indicated by pure black smoke when engine revs are above idling revs and it can also be shown by poor machine performance.
yes it comes with IHI VL7 Turbocharger (Stock)
Twin Turbo.
because it's only a 1.3 and because it's a turbo. look up turbo lag.
12.5%
Twin Turbo.
The Fiat Punto car has different size ranges. Ranging from 1.1 petrol to 1.2 8V. Also 1.2 16V, 1.3 diesel turbo 1.416V, 1.4 turbo, 1.8 hgt,1.9 diesel turbo, and 1.9 multijet. There are also more sizes.
put on a turbo
The ECU is located under the Scuttle panel at the base of the windscreen
Trask performance makes turbo kits for Harley's, can be seen on link below.
it cools the air compressed by the turbo from the turbo to the intake for better performance and maximum horsepower
easy your yurbo oil seals are gone. white smoke is the turbo smoking. take out the turbo and check the blades for worn or movement. if ok buy a turbo rebuild kit from eBay and get a specialist to do it.