04' 5.9 Cutting out
 

I have an 04' cummins 5.9 and i downloaded tnt on my smarty and it would cut out when i got into it in lower gears andwhen i downshifted to race. i believe it is the lift pump not supplying enough fuel.But i went back and downloaded revo which isnt as agressive as tnt and it still does this. What should i do for the money. which is in short supply. i was thinking air dog if thats what would fix it. id like to be able to run my smarty turned up sometimes