ISR Performance Street Cat Back Exhaust Hyundai Genesis Coupe 3.8L V6 2010-2016 | IS-ST-GEN38 Vehicle Model_Mazdaspeed Mazda3 By installing the rear bumper

By installing the rear bumper support brace will provide immediate positive feedback driving on the street or the track

During power on

Installation Instructions are provided

the factory ECU will provide a "relearn" and dial in the new throttle body

ISR Performance Street Cat Back Exhaust Hyundai Genesis Coupe 3.8L V6 2010-2016 | IS-ST-GEN38 Vehicle Model_Mazdaspeed Mazda3 By installing the rear bumperIS ST GEN38 The ISR Street exhaust is a cat back exhaust designed for high performance. It has a great appearance and produces a great sound. The ISR Performance Exhaust produces great sound with a nice deep tone. This exhaust does not require a silencer to keep drone down to produce smooth sound effect. Full Stainless Steel Construction Polished Dual Staggered Tips Single Oval Muffler Utilizing the extremely popular ISR Performance 2. 0L exhaust