its a lot quieter with the hood closed. Heli gear will be a bit more quite too. I just like the whineThat thing is loud. Does procharger have different kits for quieter installs? I know vortech has their heritage kit that is pretty noisy. I’m thinking about one for next year but want the quietest centrifugal I can get. Vortech, Paxton or Procharger. Any advice for a stage one kit?