AIRTEC Motorsport Intercooler Upgrade for Mk3 Focus RSAs part of our expanding Focus RS product range, AIRTEC Motorsport is proud to launch our huge Gobstopper intercooler upgrade with 4in core to offer increased performance through reduced charge temperatures in comparison to the original intercooler. This is particularly important to remapped examples. Our solution to improving the OEM intercooler set up within the confines behind the bumper assembly is based upon a high flow, single pass core design,