[2011.2017.odyssey]

someone else posted something similar lately, there wasnt a follow up conclusion but many believed it was either the air intake boot was torn or a vacuum noise/leak from the brake booster area.

maybe a video with an assistant will help you chase it down.

 

[2011.2017.odyssey]

The brake booster is an interesting comment. I have noticed a different feel in the brakes. No squeaking, and I have new rotors and pads as of a few months ago, but the van doesn’t seem to stop as well. It’s like I have to apply more pressure to the pedal to the pedal than before. It still stops, but I can tell something is off.

ceramic pads will do that, but they are dust free!