TF400 or Torque flow

[Sworkskid]

One for the hive mind. My car is fitted with Eann Whalley TF air flow meter and ecu chip. Now the question is does anyone know what thd chip was or what was done to the chip as in, is it just a 450 or 500 chip or was it a completely different map like a tornado chip for example?

And regarding the airflow meter is this just a larger bore or was the settings different there too ?

Obviously can't go to Eann for answers as he sadly passed away.