Yup...My 1 also standard tune, just concern the kick down respond. This will enough to competive with standard EVO or Impreza. If u want to move the battery to the back, same as Alan mention use the high quality & low resistance wire. Im using welding wire currently, another few point need to take note is the connecter must clamp hardly with the wire to prevent current flow mis-connect, 2nd can adding the earth wire at negative outlet to smooth the current flow.thinking of adding some extra hp later, now the car's hp is pretty much the same as standard gt4 only. saw your pics, like the idea of moving the battery to the back. how much does it cost ar? any side effect?
Hope this will give you reference & note as well.