i have a stock 06 wrx tr and i was wondering what would be the best way to start off with the mods? im not too good with terminalogy and need some pointers. im looking to hit between 350 - 400 hp when im done and was wonder about what i could do to hit that. i also want a bov but ive read and understand how this could be bad for ur car. what if u change the aif flow sensor isnt this the reason why a bov would be bad for a rex?