Originally Posted by ecapox
Noob here. Just purchased a 2011 WRX and the first thing i did was come here and look for this exact question. After reading about how lean our cars run and how dangerous it is, or people believe it is, it almost leads one to want to use AccessPort or some other tuning method to normalize the AF ratio.
With that said, running modified software is grounds for SOA to void your warranty if something does happen. Catch 22.
The dealership cannot void your warranty because of a certain modification, they can only deny warranty claims on a case-by-case basis if there is reasonable argument that the modification may have contributed to the failure in question.