Originally Posted by SeraphimX
well now the brand of air intake and the type of air intake matters too...
since we are driving NA, just changing the filter won't do jack, you need at least a short ram, or better still a Cold Air Induction kit, and that being said, different brands costs vary as well as their performance, you really need to do some research and thinking otherwise you could be making some costly mistakes... and of course there's the slight possibility of losing power inthe case of getting exhaust (too big and you lose power because of compression or somthing like that)
I don't think you'd be wanting to change/swap the engine tho, the premium you paid for the low kms makes it unviable (ie if you wanted the swap it you'd have bought a thrashed one for like 4k, threw out the engine, spend another 4k swapping a b18 in)