The turbo starts spooling up noticeably around 2.4k to 2.6k RPM on the CX-9. Might be a little sooner on the CX-5, but definitely between 2k and 3k RPM.
Ambient temps are cooler where you are right now, right? Between 0 and like 10 degrees? At cooler temps, the humidity in the hot exhaust gases...