Quoted from a recent Autospeed article.Mazda GD MX-6/626 F2 Turbo Air-to-Air Intercooler
Flow - Direction A and B 178 cfm (equal 22nd overall)
Mass - 2.1kg (equal 15th overall)
Core Measurements - 32.8 x 16.5 x 6.4cm = 3464cm3 (10th overall)
Largely forgotten in the Australian performance scene is the 108kW Mazda-developed F2 turbo 2.2-litre as found in GD 626/MX-6 turbo and the late Ford TX5 Turbo. The F2 intercooler is solidly constructed in aluminium and offers mid-range core volume and thermal mass. Its airflow is very poor, however, with even the small Nissan intercoolers causing less restriction.
The only application this intercooler is suitable for is where engine output is under about 120kW.
While our intercooler have quite good size, and thermal abilities, it appears they are very weak from an airflow point of view.