ya, it's normal... 140 is a lil high, in vegas, my IAT's are ~110-130 depending on outside weather...
assphault out here can be 160degrees in the summer...
as long as it cools down once you start moving (sucking in air) you'll be good...
at idle, the motor and engine bay get no circulation so all the heat is chillen...
dont worry about it... you wont "dump" more fuel at idle.....
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