I'm sure its possible to have a quiet car. I've quieted down 500whp+ Hondas with the use of VRS SS piping adding Vibrant oval resonator and Apexi WS2 muffler or Thermal R&D 8"oval x 16" muffler. On a G20 w/ VE+T we did VRS piping, Magnaflow Resonator, and Vibrant Black muffler, its real quiet for what it is as well.