Under the scalers tab there is a setting called TB air flow. The stock A9L setting is .55 something. Is it a co-incidence that the stock TB is 55mm? If not, where do you find the correct setting for a 70mm TB (.70?) or is that a function of the MAF voltage output and the TB airflow is what it is and the TB air flow setting is a multiplier factor for the computed actual MAF?