Before i was running stock dp,custom 2.5 testpipe and no muffler. Now im running full tbe from corksport. First impression says that its alot quieter normal driving which i love. Then at wot it comes alive. Has so much more depth its awesome. Remember this exhaust is 80mm so its a touch bigger than 3inch. I like it ALOT. First power impressions were a loss in bottom end. Which i like because my car was to much of a tire frier and spooled to fast before. Now it comes on more mellow yet pulls harder up top. Exactly what this car needed. Im also holding about 1 more pound of boost at 6k. So thats good too. All in all I like it and the sound is PERFECT! I highly recommend it. Thanks Ken at ProtegeGarage for hooking it up. I appreciate it. (drinks)