fiat Sedici 1.9 120hp cold start problem / how to diagnose and fix see description

Описание: hello, I had issues with my Fiat since I brought it...

On cold start (under 20 C degree) start very hard when sitting overnight. I saw this on at least 5 Sedicis that I tested before buying this one.

The issue is on standard mapping, gives too less fuel when temperature is less then +20 celsius degree and start dosing at 1rpm.

I took it to a friend and checked mapping of other Fiat models with same engine (Bravo was starting perfetly on -20 C). He saw that the other models had +30/40% more fuel when starting at low temperature and fuel was delivered at 50Rpm.

He increased the fuel volume to +35% from stock (only on the colder temperatures: -40 celsius degree up to +15/20 celsius) and fuel delivery starting from 100rpm. all the changes only influence the starting, after this all the values are standard.

This fixed the issue, now starting perfectly everytime on each temperature. I will made a video after change.

I hope this video and details will help others with same issues.