Makes you wonder how that works with the 16T angled housing. Did they frankenstein a 16t turbine onto a 13C compressor? Im pretty sure the 13c's had smaller turbine wheels.I think that is just engine bay shmutz. The bosses on the compressor housing are in the wrong spot for a 16T. 13C has the one pictured about 180 degree from the outlet, 16t theyre both near the outlet.