Changing out your exhaust system will give your new Dodge Challenger the exhaust note and power you want from a true muscle car. A new free flowing exhaust always is good for anywhere from 5-15 hp (depending on the system) and certainly will give your Challenger a growl that will differentiate it from the pack. Our most popular exhaust systems for the 2008+ Dodge Challenger come from Borla and Billy Boat Exhuast. Both companies offer systems that truely bring your Challenger to life and provide and exhaust not that will keep you from ever wanting to listen to your radio again (will always just want to listen to the exhaust). Both systems are made of stainless steel and provide average power gains of 10-12hp. The Billy Boat system gives you the option of using your OEM exhaust tips of using the Billy Boat tips.