I have the Stillen Gen 3 intakes, Z1 Intake Plenum mod, Berk HFCs and Stillen catback exhaust. With the UpRev tune I dyno'd at 311/254 at the wheels. It sounded great on my road trip from Atlanta, GA to Hood River, OR and back this past summer. Nice deep growl, no drone yet got loud when I got on it.
