Wheezing sound on cold start

Hi,
New member here looking for any advice on a sound my 5.7 started making only on cold start up recently. It does seem weather dependent happening if it is a little brisk outside or colder. I sent the video to my dad, but he couldn't pick out the sound from the engine starting. I know I can spot Tundras across parking lots by the distinctive sound of one revving to life so I figured maybe some other Tundra owners would have some good insight before I take this to a mechanic shop. I have a feeling they are going to have a hard time replicating the sound. I'm linking a youtube video short with the sound:
https://www.youtube.com/shorts/WXidxr1ON6c

 

Is it the SAIS ?

 

SAIS.

 

That would make sense given the circumstances. I haven't seen a check engine light at all, but it could just be starting to have issues. Thanks!