So Ive recently swapped an 8.1 into my 86 c30. It originally had a 6.0 4l80 combo. Ive got the truck running good on the 8.1 avalanche file but Im not getting any actual iac counts but I get desired iac counts. I cant get it to go into an idle routine when its warmed up and it?s pulling spark down to like 5 degrees to get idle down to where it needs to be. So I did some reading on here and found a couple threads saying that I need to use a dbc os and transfer all of my 8.1 tables to that file. So I used the original stock file from my 6.0 80e combo and transferred everything over using a template of the 8.1 file that was running good. I now have actual and desired iac counts but the truck will not stay running. It fires up and runs for about 10 seconds if you hold the throttle open but then it dies. I made sure that vats is off and all the normal stuff you would think of. If I do a write entire and flash the original 8.1 file back in it fires and runs perfectly. Im lost does anyone have any tips.