Wow lots of views but no responses. SPT seems to be the official Channel for Subaru but any intakes you get for a WRX would require a tune because you are changing the AFR which these cars do not like at all. A lot of people would say don't get an intake unless you really want the induction noise. You also will NOT get the "Subaru Rumble" as that is caused by the Unequal Length Header in the older EJ engines. the FA20 has an Equal Length Header.