Hey guys, so thanks to 'crazyricochet' I got myself a set of UEL headers. LOVVINGGG THE SOUND NOW! Sounds like an absolute beast. Iphone quality is pretty terrible I admit, however the boxer rumble is now there and thats exatly what I was after.
https://www.youtube.com/watch?v=Y8WcM9M0SOo&feature=youtu.be