Hey kids, I also have an OBX B3 bomb exhaust and it sounds pretty awesome for being cheap. I payed only 107$ and had a custom catback put on it with an OBX cat.
The horsepower difference was quite noticeable!
I recommend them for you guys on low budgets and what not. 
low budget = definetly me
what kinda sound is it??
like a low rumble or more of a high pitch rumble
Its more of a deep tone and it sounds really good when you first put it on! After you break it in it has a different more humming sound but it still sounds nice. Also i dunno why it does this but when i let my foot of the gas it crackles like which is kinda kool i dunno lol 