Might be worth noting on DSG cars, but there was a fella with a TTS dsg, which on hot days the car would drop into limp mode due to the fact of the twintercooler is a design which involves "stacking up" of coolers, which led to there being less airflow to the trnsmission and it subsequently over heating.
This is something I am aware of, and one of the things putting me off this solution. By the time the air goes through the Forge, a/c, regular intercooler and in to the radiator, how much cold air actually gets there? On the flip side, you will get a pressure drop when adding a Twintercooler.
The THS and APR cores dont do this, but they are still sat behind the a/c core and in front of the radiator.
As I said, swings and roundabouts, but I know I need more cooling on mine.