I've heard of the sulfer problem also, however i haven't found any InterWeb sites that discuss it. if i could find an Apexi filter element that would fit onto my intake I'de consider it . (only when i can get a tune like same day)
I think my next few mods may just be cosmetic / audio related. Audio i at least know my component sets from my capcitors. and cosmetic... i have no design sense ,but i'm thinking about buying some Blue sparco mud flaps (very very cheap) , although my eyesore Red flaps are growing on me, too bad they are an orange based red, and not a blue based red.

maybe i'll post a pic for the amusement of others