I start off first by saying i'm new to this and still learning. We have a 1955 austin healy that we have a 6.0 ls1 truck engine in with a professional products intake and a 5 pin maf. The computer and harness came from street and perfomance and when i called them they say they accidently wrote the tune for a 3 pin maf. is there a way to tune with the v2 and change it back to a 5 pin calibration or does the os need to be switched. the os in it right now is 09381344. The car runs as long as the maf is unplugged but as soon as you plug it in it dies. I'm trying to get to the point where i can start datalogging but i know something is wrong so i want to fix that first.