Cant notice any difference at all in performance or sound. The quality however appears to be solid and more economical than replacing that oem paper filter a bunch of times.
This Catback exhuast gives all the burbles and noise i was hoping for. It does this while not being annoying or overly loud. You mostly hear it when the rpms climb high. Drone is minimal as well. Next on my list is a front pipe and down pipe.
The HPS air intake really woke up my R. Shipped fast and was on the car in a few days . It sounds so good hearing the turbo noises !




