Don’t put it on, you literally won’t gain any power. I raced my friends 04 Type-S before and after he installed a shitty intake (AEM V2), a shitty shorty header (like yours) (a DC) and a shitty set of useless pulleys and pulled him exactly the same amount as I did when he was stock, if not a little more. There’s not even a noticeable change in exhaust note with a shorty header, just don’t even bother and sell it to someone who is looking to waste his/her money :thumbup