Which exhaust has a better sound for street use? Which one is louder? I know which one is more expensive, but there is usually a reason for that. How many horses can I expect to ad with a full exhaust and a PC3 with a custom map?

there both great,i had them both..both sound great,the Hindle puts out about 3-4HP less then the Akrapovic..I would get the Hindle..$500 cheaper then the Akrapoivc..