Subaru WRX Forum banner
grimmspeed
1-1 of 1 Results
  1. Bolt-on Tech (EJ225/257 2.5L 04-07 STi 06-07 WRX)
    Hi so I’m just wondering if grimmspeed stage two would even require an accessport or should I go to dyno tune it? I wanna do the grimmspeed but I want to also not have my car blow up...any take on it
1-1 of 1 Results
Top