I have a 05 wrx with the prodrive upgrade which brings it to roughly 265bhp with the map or different ecu.
Can I fit something like a cobb intake with airbox without a retune? Or would it be a waste of money. Thinking of removing the hks bov and changing to the intake instead.
Just putting a list together of mods to try do over the next year.
Any info or advise / recommendations would be appreciated.