Ok went to do a Custom OS flash but got a warning
"To reduce the risk of failure, EFILive recommends removing
your PCM from the vehicle and using a bench harness to
perform the full reflash.
Alternatively, the PCM may be left in the vehicle, provided
that a star connector is used to isolate the PCM from the
class-2 network during reflashing.
Programming the target PCM in-vehicle, without isolating it
from the class-2 network, is STRONGLY discouraged.
EFILive accepts no responsibilty whatsoever if your PCM is
permanently damaged during a full reflash procedure."
A star connector? Class2 network?
Removing the PCM from vehicle ?