http://www.google.co.uk/imgres?imgurl=http://myweb.tiscali.co.uk/smrautoservices/Aftermarket/Downpipe_3.jpg&imgrefurl=http://myweb.tiscali.co.uk/smrautoservices/Aftermarket_Products.htm&usg=__x7rg-mArWjHUPNt_xdeU4Bteq6E=&h=166&w=208&sz=21&hl=en&start=394&zoom=1&tbnid=AaawaDv5dRX-IM:&tbnh=116&tbnw=145&ei=7vJ_Te6NKM-SOq_0vbwI&prev=/images%3Fq%3Dsubaru%2Bdownpipe%26um%3D1%26hl%3Den%26sa%3DN%26biw%3D1152%26bih%3D541%26tbs%3Disch:11%2C9366&chk=sbg&um=1&itbs=1&iact=hc&vpx=637&vpy=277&dur=414&hovh=132&hovw=166&tx=68&ty=74&oei=WvJ_TfbWO9S7hAfDr6CfBw&page=23&ndsp=18&ved=1t:429,r:9,s:394&biw=1152&bih=541
standard style
with the open mouth it helps with turbo spool up and a faster flow or some shit .