Okay So I just made my first purchase. Getting a Cobb 3in Downpipe and the Cobb Access-port V3. Does anyone have any other recommendations. I still want to be able to use my STi as a daily driver, but I'm not sure if there is a certain map i should install or just let the guys at All Pro do there magic. I had looked into the Cobb intake but was thinking I can just do that another time; or would it be best just to get it out of the way now?
Do that, stop there, enjoy. If you ever plan on a different catback look into another downpipe as the Cobb is tapered to fit a donut gasket like stock. Aftermarket exhausts will require an adapter.
I'm running my cobb downpipe to the stock midpipe and I have a nameless performance axle back (no mufflers) and my car sounds amazing. If your car isn't as loud as you want it I would definitely look into that route. My car is not obnoxiously loud, but it is loud haha.
I believe the OTS Stage 2 tune only requires a cat back exhaust and a down pipe with a high flow cat. I daily mine 100 miles a day with a stage 2 tune and its the perfect amount of go while not being crazy. I second Ben's decision on the Nameless Axle Back though with the muffler delete. Put it on mine and it sounds amazing and Nameless has the cleanest welds I have seen on an exhaust ever.