i have a custom 2.5inch cat back exhaust on my car and the shitty ebay muffler (cannon style lol) started rattling because one of the baffels or somthing broke in side of it. so i cut it off because it was drivning me crazy! now my exhaust ends right behind the rear axle and it sounds rediculous like a race car way to loud. so my question to you guys is with my exhaust being like that and me having a berk technology test pipe is it going to hurt anything motor wise? it pulls like crazy but i want to make sure im not hurting anything!