I recently swapped my 92 Camaro to a speed density TPI 305. On the first start up it ran fine for a good 10 minutes than it died and would not start again. After some trouble shooting I removed a spark plug and it was black. After some research I had concluded that my FPR was the issue so I replace that popped in some new plugs and still have the same issue. Im not sure where to go from here. So I checked to see if it had some codes it and it had. 51 22 33 41 43 and 45 .

If anyone can point me in the right direction it would be greatly appreciated

 

Wouldn't you have to change the ECM going from CARB TO EFI? Just a thought