Ok this may be a dumb question( I know there are no dumb questions only dumb people) It is said and I believe that the GP intercooler is the best because it recovers quickly. Well that's good but the R53 is not a Red light racer, drag car, its for the twisties. So why do I care about if it takes a few seconds longer to recover. Once I get air flow a bigger IC will work better than stock. The Airtec intercoolers look nice and appear to have the data to back them up. https://www.airtecmotorsport.com/product/airtec-top-mount-intercooler-upgrade-for-mini-cooper-s-r53/ I know I am going to sale my R53 but just incase.