CSF Racing Twin Intercooler KitPorsche 991 GT2 RS Twin Intercooler Set Since the vehicle's release, the only Porsche 991 GT2 RS intercooler upgrade was not an upgrade, but a band aid for the stock 1990's style water spray system which sprays water from a reservoir in the frunk and onto the intercoolers. The band aid was to install a larger capacity water tank which simply delayed the inevitable running out of water and output to be automatically limited by the factory ECU to try to