Hey guys whats up.. Newbie here.. I have a 2003 2.4t with 49,000 mile and got it for 11,000. In great to perfect condition. And i was wondering, and yes i searched, but can someone just explain what the Stage Zero mod is. Like what exacty is done to the engine. Also, what would you reccommend for a first mod in the 100-300 area. Also does a BOV such as HKS or another similar one give off the noise even tho it is a manumatic? Thanks everyone