Just got our new 12 WRX last week. First WRX, first Subaru. Got the tint done and been putting miles on it to break it in. Reading up on mods. Don't wanna lose warranty, pretty much first priority. Only real performance option on car was the short throw shifter. Going to add OEM fog-light kit and HIDs. Thinking possibly down-pipe and tune. I want something I can tune and re-flash to stock if I need to take it in for service (and get no BS from dealership). What kind of gains would I see? I guess Cobb is the big go-to. What kinda 1/4 mi et's are these things running stock/with a light tune/DP? You guys think they'd still give me **** over the aftermarket DP? Thanks for your advice.