Cheers RHCC, I bought it secondhand and could notice the slight wearing on the air feed (spring popped out, stitching loose etc). I've disconnected anyway to give it a nice throaty roar
Also I haven't got my Milltek yet, but just by disconnecting my PX it's got a nice throaty roar similar to the video, the Milltek will severely enhance it though when it comes to me getting it
