Technical Irregular Boost

[R1aan]

Good Day I trust everyone in doing well.

I'm in need of assistance I recently had problems on my Fiat Bravo 1.4 T-Jet sport 2008 5dr (198a)

the Boost is irregular and there are no Engine lights coming on ….. I don't know what to do anymore I've checked all the boost pipes and to no avail .

Can someone please assist me ?

 

[Daiton]

A bit more explanation plz

 

[edesl]

Check the boost pressure vs. theoretical pressure. Make graph with multiecuscan.
The blow off valve and turbo solenoid could both be faulty.