Cobb Tuning CSF High Performance Radiator suit FL5 Civic Type RDescription The factory cooling system is more than capable of keeping up with spirited driving and a daily commute. However, it starts to show its limitations when pushed hard on the track or when tuning is involved. From a quick flash tune to full big turbo builds, better cooling will always be beneficial. The CSF FL5 Civic Type R DE5 Integra Type S Radiator features the latest 5mm fin technology. The smaller fins significantly increase the heat