I guess "cheap" is all relative, but I decided to go with K&N drop-in filters and Cobb post-MAF tubes at a total cost of right around $200.
Aren't those K&N filters sexy?
I haven't dynoed and I don't have any means of measuring IAT, so i don't have any hard data, but the intake note sounds a little better than before and it seems a little more peppy, like it wants to get to redline sooner.
I might consider a tune after i get the exhaust on tomorrow.