i've been looking around for an intake and i haven't found much for the 2.2L impreza L. After searching a little i found a wearpon-R secret weapon intake system that will fit and it seems like it'll produce good hp numbers. Before i place an order on this weapon-R intake, do you suggest any other intakes? Let me know.
it is made for the 00-01 cause of the MAP sensor. You should have a MAF, you might have to mod it a little for fitment and correct performance.
auto zone has maf adaptors, plastic one for 8 bucks, or aluminum one for 15 bucks, or you can do like i did and lop the flanged end of your MAF off..its worked fine for me so far
This is what I did, I cut my intake because it was a little long and I got the adapter and that seems to work great...