well, I'm doing the repairs myself and I asked around before changing parts....and it might sound wierd but I still enjoy working on my car :P lol
Anyways, the air filter was replaced about 2 month ago with a clean one and it's still clean (from the looks of it)
And besides the start, the car doesn't act wierd at all, expect maybe on idle it's a LITTLE rough, but barelly noticeable (RPM don't seam to change that much) and highway is just fine