I had a Mitsimoto on my Ecoboost Mustang and got really tired of the sound. It wasn't like adding one to my V8 Mustangs--I got tired of the hissing sound when you let off the throttle. After a year I put the factory one back on, mostly cause I knew I'd trading the car eventually and was happier with a quieter car. I felt the Ford Motorsports Touring exhaust a much better modification.