The OEM core is 510w x 130h x 110d where the Forge core is 530h x 150w x 130d giving 20% more surface area and 41% more volume than stock. The core is of bar and plate construction, with aluminium end tanks compared. Size is not what a cooler is all about but efficiency and airflow of the core and end tanks in the design, and nor is a cooler used on its own to create 'big peak power', it forms part of an overall performance package allowing you to run increased boost over stock and assisting in keeping IT temps at bay. Quality not quantity!
Mine ran (oem software) 15 deg C cooler on the dyno with limited airflow compared with the oem cooler. On the road that would increase somewhat.
Pic from the development fitting stage
