NB question, just got a WRX 2012 and worried that if I do anything to it I may void the warranty, so want to be somewhat conservative here. For starters I would like to make the turbo spool louder, would you recommend using a BOV or installing an intake kit + mess around with ECU? I just would like to know what'd the safest way to go, in case the car needs to go back in Subaru and I put back all the original parts, I don't want them voiding my warranty!!
Thanks in advance!!