adding a cold air intake

[Rufasim]

If I add a cold air intake and an exhaust to a 2018 ltz, will I need a tune? Not sure what intake or exhaust, just doing some checking before I get into it

[2017SierraSLT]

_{It will work without a tune, but some brands CAI's lean out the mixtures a lot at WOT. A tune is preferable.}