Nice exhaust tone upgrade to Scat Pack Challenger 6.4L louder cold start up to 4 bald eagle tone, louder at idle than stock car outside , Normal driving, sound slightly lower than stock but not much louder than stock, full throttle 6 bald eagles screeching. Installation was $100 for both, welded at a local exhaust shop. I love that it's not as noisy as the people who remove the center muffler on these cars, it adds a nice tone at a good price.