Picked up a powerflow exhaust off of eBay and only bid £72 which I felt was a bargain! Picked it up and was surprised just how good the condition was, centre section and back boxs still shiny with minimal rust on two tiny sections! It is the full system with decat and straight through 2.5" bore centre section leading to twin back box. This system is, erm, loud! Haha but only when accelerating when cruising it isn't really that loud which I find is great! It sounds amazing also when you hit that 5k rev range and the note changes to a real rasp! I'm geussin I can expect some gains from this system, any idea how much? I'm thinkin about 8bhp?