Reasonable install time. Good quality. I can feel a bit more torque and the sound is awesome. Love the whine from my super charger with this. There is some extra noise that is created by the exposed top of the Alta. You can here the throttle opening and closing and the air noise is increased as well. I love it. If it's not for you, Alta does make a lid for this that I would expect would make it quieter.
Either way, great product!