A little while back we had our Subaru WRX on the dyno, for more than anything a health check up.
Engine modifications
Subaru EJ20 | stock internals
STi inlet manifold, tumbler valve deletes
IHI VF-34/P20 turbocharger @ 18psi
Equal length exhaust headers & 3in exhaust
Process West V2 intercooler
Split fuel rails, STi 550cc injectors
PFE regulator, Walbro in-tank pump
APS cold air intake, HKS blow off valve