New guy here. I just got a 2014 si sedan last weekend and I am absolutely loving it(except for the non-existent detail job at the dealership). Years ago I had a 2009 civic si coupe and enjoyed every single one of the 100000 miles I put on it. My only regret being that I left it completely stock the entire time, I had a lifetime powertrain warranty and was too scared to void it(I never had a single problem with it) lol. My si came with a k&n typhoon air intake, I'm looking to add a downpipe and exhaust. I would greatly appreciate any suggestions on which everyone prefers, I've watched hundreds of videos trying find the right sound and haven't found it yet. Even more importantly I am looking for advice on where in eastern North Carolina(Jacksonville/Wilmington) to have the work done at? I've read enough to know that I will need to have the car tuned after that... tuning is way over my head and I would really like to find a garage that really knows what they are doing. I'm not looking to create a race car but a few more HP and great sound never hurt anyone, right?