Can you identify this sound?

Hello everyone, I am trying to diagnose this new sound I've been hearing on my 06 V8 4runner. I recently changed out the timing belts/water pump with all OEM parts and recently started hearing a strange almost vacuum sound upon start of the vehicle. As per the video posted, the sound is audible at the 10-second mark and after everything after seems ok. Can't say there are any other engine-related issues I may have. Please let me know what you experts think!!

Here is the link: https://youtu.be/bp6baGkW6EQ

 

Secondary air injection/smog pump?

 

It’s the Secondary air injection pump.

 

@SR5 Limited @golfguy thanks, I reached out to someone in t4r with a SAS bypass although I’m receiving no OBD codes. Fingers crossed for the best!!

 

All it does is blow air to your O2/sensors to help lean it out and heat the engine up reducing start up emissions. I wouldn’t delete it....

 

@SR5 Limited thanks again for your help, I just had the vehicle registered and passed smog with flying colors