I’ve noticed when I’m in Park and Neutral, my truck revs fine. When in Reverse or Drive, my exhaust( or something) creates a for what I like to call a sh*t whistle. The sound of it just doesn’t sound right and no matter how many times brought to the dealer, they tell me that’s how the 4 cyl Tacoma’s sound. Anyone have any experience on this if they’re just lying or if this is really how it sounds. If so, help to change bc im so sick of it!