Thats one thing i dont really know anything about motors much at all. 
just knowing how to change  somethings out  but about preformance  parts and anything dealing about setting things up, (best thing i can do is swap motors)but with doing upgrades,or any more tech on them idk.  
  
im just getting into this even though i love subarus sence i was like 10  
  
for me i think getting info from people that work and fix up subarus  is better for me  :-\