Good stuff. It’ll get louder after about 5k, but nothing like a twin screw or anything. But you can def hear something is a little different with my car at idle after a while, when it was first installed it just sounded kinda like a noisy serp belt (not squeal, just loud).
Good luck getting used to the sensitivity and that throttle blade opening up. It’s not bad, but very different, as soon as that glad cracks open the car is ready to go!