Boost Baro readings, need to know if normal

[Rock2610d]

When my boost hits 18 or so psi, my BARO reading drops to 19.9 in HG from the normal 22.7 in HG, is this normal? See 111.4 seconds in log.

It drops almost 3 in HG

Please note my elevation 7500 feet, 22.7 in HG is a normal reading....but 19.9 in HG is not.

thanks

 

[Rock2610d]

check if you have any boost leaks

I am sorry I should not have posted this in the newbie forum. Unless I am missing something, a boost leak would be after the baro reading. This is a baro reading between the turbo inlet and the air filter. It would (hopefully) never see boost.