Sup, uh..i've been to this site many times and registered and I read over the forum sometimes. I'm into imports but I'm kinda a n00b (or teenybopper, whatever) into this since I don't even know how to drive yet. First time posting. I just got a question. I notice theres alot of catback exhaust system brands out there that make exhausts for cars. Such as Apexi N1, OBX, and the 5zigen. I'm just wondering whats the difference between something expensive and something not. uh...letsay a WRX with a 3in diameter exhaust from 5zigen. And a cheaper one from Ractive was both put on. Is there a major difference?? Cuz if you compare prices between them it's kinda high. I thought it really didn't matter as long as it gave a bigger hole that helps air flow. Would something from Blitz or Apexi work the same as OBX or Ractive?