i am looking at getting the Cobb Accessport tuner for a 04 wrx, i was researching it on their website and it had stage one and stage 2, i was planning on getting that, a catless down pipe and an exhust(so pretty much just making my own tbe). my question is will i need anything else to run the stage one setting?
They have instructions on how to use the accessport on their site. It is very simple. Flashing your ECU with a base map takes some time, at least on my v1 ap it took a good 10 mins or so. But it is very very simple. Also for stage 2 you will be fine. Im running catless egtless upipe, catless 3'' downpipe and stock cat back with a k&n replacement filter and snorkus delete.
Stage one is for stock cars, Stage 2 will be the TBE and nothing else.
It is easy to install and can be tuned by any Proturner. I suggest that you read and follow the map notes. The OTS maps don't like anything other than what is listed.