Checked my ECU and engine grounds there all good. I double checked my TPS switched them back and forth. When I connect straight to the Distributor c1 and c2 it starts when I run the wires from the B plug reverse B10 to C2 and B12 to C1 it starts will throw codes 4 and 7 again. When have it wired correctly B10 to C1 and B12 to C2 it just cranks, hits for a second and then Dies out.

 

i had a similar thing happen, mine was a plugged cat. worth a shot.

 

Unfortunately I no longer have the cat so thats not it. Was that your only problem that you had was the cat???