I haven't seen anybody mention this when I did a search. I hear some kind of scratching noise when I accelerate in my 2005 TL w/Navi. It has gotten really annoying lately. It kind of sounds like a piece of paper fluttering in a fan or a cat scratching a sofa. I opened the hood and checked to see if anything was caught, but didn't see anything. Everything is so well hidden in there! Any thoughts?

You have to really listen and drown out the air intake noise to hear it. I hope the technician can hear it when I take it in.