I have been battling an issue with my LS6 swapped Porsche 944. When the car is started from the cold, it runs fantastic with lots of power. When the car is shut off and sits for a while and restarted, it funs rough with noticeably less power. There is no issue transitioning from open-loop to cold loop, and the problem seems to occur when the car is restarted from a drive. An example is when I drive the car to the weekly car show, and I park the car for a couple of hours. When I'm ready to leave, the car runs rough. Going to the show, the car runs fine. Another observation, is car struggles at low rpm when pulling into my driveway, or driving slowly up a grade. Anyone has seen similar issues?

LS6
226, 229, 575, 585 Cam
85mm TB
40lb SVO Injectors

1986 944 LS6.ctz

LS1B_0168.efi