Hey whats up man, I plan on purchasing a 2010 wrx and was going to do the perrin stage 1, which i noticed youalready have. Was wondering how much of a performance gain did you get from stage 1, and if you have any videos? How easy is it to flash back to stock incase you need to pay a visit to the dealership?
Also does the perrin intake add any gains at all? and how hard was it to install
any help would be appreciated