Modified LS1 won't idle
 

I have a 1998 Z-28. Last summer, I added a GM Hot Cam, Edelbrock heads, a FAST 92 intake manifold and throttle body along with SLP headers. It also has a Centerforce clutch using the stock, resurfaced flywheel. I've had the car dyno tuned. But, it won't hold an idle and dies when coming to a stop. I've taken it back to the tuner twice. As soon as I get it home, it acts up again. I'd appreciate any advice on how to solve this idle problem, thanks.

Post the tune and data log files. W/o those, it's not much more than a guessing game.
If that's not possible, I'd suggest a new "tuner"..............