Little late on this but i currently have this set up in a 2006 wrx. It made 280 on the dyno hitting 19 psi and spools close to 2700 rpm. I currently have stock headers and downpipe cause i cant find replacements, and cant buy gaskets at the dealership because the flanges arent the same as usdm. But other than that no gripes. I have an sti top mount, sti injectors, aps bov, and stock intake. Tuner said it could make more but would require e85 to get it.