Evo 8 boost question

[Mr_C]

Hi I have an evo 8 mr fq340 it's mapped to 1.8 bar then should drop to 1.6 however it seems to be sitting at 1.8 constantly on boost should i worry and what could cause this?
Thanks

 

[B6lee]

should stat at 1.8 constantly

 

[Dirtmatt]

As lee said spot on if it can hold boost