Review on 🚗 MagnaFlow 11366 Performance Muffler: 4in x 9in Oval Straight-Through Design - Satin Finish by Michael Liguori

I installed this on my Cadillac CTS 3.6 liter engine, with EFI, without direct injection. This engine will never sound like a V8 and it made a little hum at first but now it sounds great! I think you can't go wrong with that! In addition to the cold air intake, performance and throttle response are noticeably better!