aac and ficd have different connectors based on where the connector "key" i guess youd call it is placed, either on the left or right of the connector.. correct me if im wrong on that. and im sure theyre not swapped. maf is a rebuilt maf from concept z performance so i trust their work. about the only thing i didnt replace was injector o rings, the plenum to injector seals are replaced but not the o rings which i should have done in the first place... im gonna pull off the plenum tomorrow and see what i find. maybe theyre worn out after 15 years of in-op