Newbie question
 

I just recently picked up yesterday at 2015 Honda Civic touring! Its a 4 door sedan and was wondering if its the same as all the other models besides the Si. The reason I'm wondering is because I want to put on a cat back exhaust system and I want to know what's compatible with my vehicle. Thanks.

no it usually differs between models mainly because some have cat converters integrated into the header and others are underneath the car. either way you won't really gain any HP with just a bolt on exhaust. people mainly use bolt ons just for a sound difference. if thats mainly what your looking for then you only need a universal muffler not a catback,axleback. just make sure you buy and oval style muffler like vibrant street power and not a coffee can fart cannon like most ricers use.