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Hi, I think I got it wrong.
VE tables tuning is used for MAP based ecu? When you have MAF based you don't deal with VE.
I'm tuning MAP based ecu for my Vette 1985 (after MAP conversion).
This is correct. A VE based ECU doesn't use a MAF, although to confuse matters somewhat many factory ECUs such as those from GM use both a MAF sensor and a VE sub system and switch between these two ways of monitoring airflow based on operating conditions.
The easiest way to think of this is that a MAF sensor directly measures airflow. A VE-based fuel model on the other hand calculates airflow based on manifold pressure using the ideal gas law.