If anyone could help, it would be greatly appreciated.

I have a 97 cobra with v2 vortech supercharger, it hs the standard Fuel Managment Unit. Runs great, but when it gets hot, it will replicate what i remember the older cars doing when they would vapor lock. My understanding these newer cars cant vapor lock. After sitting for about fifteen minutes, it will start rough,, have to open throttle,, get white puff of smoke. Hesitates and surges like it is missing on a cylinder. good spark on all cylinders. Chasing a ghost. no codes. will run great again next day. Fuel pressure guage on dash shows good pressure when boost rises.

any ideas what to check.