cold weather rail pressure.... What is safe

is there any unsafe rail pressures to run in the colder weather months?? particularly during cold morning starts
i live in canada where we get some -40 weather

i already changed this table (ECM 7843, pictures below) this summer because of the rail pressure drop during colder mornings
wondering if it would be safe to run higher pressures during those -20, -30, -40 mornings
once the truck warms up its runs as it should.
truck does get plugged in as long as there is a place to do so



what i'm running
Attachment 116928

comparison over stock
Attachment 116929

What i'm thinking of doing if higher pressures in cold weather isn't going to destroy anything
Attachment 116930