Okay I really need some help Ive been trying to chase down this problem for awhile to no avail. I recently just got the car running after changing the whole topend and on coldstarts the car idles real rich black smoke and all and sounds like it has a huge cam. It was doing it before the overhaul also and I figured it was because it had a Fwdp f4 cam in it lol. I just checked the codes and I have a code 52 which is for O2 sensor which I just changed out when I did the rebuild with a NTK unit. Its no doubt always running rich I took it to inspection and failed miserably. I have a feeling it might be my injector harness? Could it cause the car to do what its doing? Its in pretty bad shape but idk if it can cause what it does. I am also getting supposibly alot of knock idk if its false or not i can be cruising at a certain rpm and the light will come on and stay on until I let off or accelerate more and it will do it under boost also and I can feel it loose power when it happens. Its no doubt not running like it should its not making the power it should be and im stumped. The car has,
1989 2.5
2 Piece intake
+20s
Big valve head
ported exhaust manifold
Turbonetics Super 60
Socketed smec with custum cal
I quadrupal checked ignition timing and its dead on 12 Degrees and cam timing is straight up. I know when I ordered the cal I selected for a IAT sensor and I wired it up yesterday to no change.