Okay, after finally being able to go look at my Grandsons 2004 Crossfire I found the following. He said after buying fuel it hesitated to start then backfired and spewed black smoke and wouldn't run. I popped the hood and everything looked okay. I changed the RCM because it is easy to do. Because he disconnected the battery there were no codes. When cranking it would start for a moment, have a loud pop-pop in the exhaust then surge and die or just die. I suspect the MAF or CPS but I would appreciate other thoughts. It has 101,000 miles on it.
THANKS