This may be interesting ...

I have boost gauge connected to crossover pipe ( big aluminium pipe on top of the engine) and there boost is 0.55 bar.

But on regular place for boost gauge, on vaacum, right side on inlet plenum, where is map hose, I have 0.4 bar.

is that normal? which pressure is pressure which goes into cilynder?

 

I wouldn't expect to see much difference between the crossover pipe and the inlet plenum to be honest. Before and after the intercooler would show some difference.

It's more likely that your boost gauges are inaccurate.

 

Might have a leak on the inlet manifold.

 

yes, difference is about 0.1 bar. gauge is good, I try with another one. thanks