u/Frequent-Ad8005

Drove the truck (2019 trd OR) this weekend down south. Started to realize on the way down the engine sounded louder than normal. Sort of a jet sound like it was taking more air in. Hard to explain but it was fine until I headed back home. Going up a mountain pass and whenever it got to over 4k rpms for somewhat extended amount of time, it got insanely loud like a motorcycle was coming from behind me. Air filter is clean, no codes.