Got a type r motor in a hatch running with a p72 runs great and fine idles normals no CEL or n e thing then when you put in the p73 the car sounds like a wrx like it sputters through the whole rpm i dont get it? p73 type r ecu type r motor buh not running good even with da p73 no CEL either can anyone help?

 

idk ,running rich maybe and your spark timing must be off,stik with the p72.Your p73 may have gone bad